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Truncus Arteriosus: Cardiac Pathology and Surgery

48 chapters

1. 5 Coronary Arteries

[Verse 1]
From the aortic root they start their way
Just above the valve leaflets they stay
In pockets called the sinuses of Valsalva
Left and right coronaries gonna solve ya
Heart muscle needs its oxygen supply
These vessels keep the cardiac cells alive
Before you cut, you better know their course
Or infarction becomes your driving force

[Chorus]
Five coronaries dancing through the heart
Left main, LAD, circumflex from the start
Right coronary artery takes its stand
Posterior descending completes the band
Map them out before you make your incision
Anomalous origins need recognition
Five coronaries keep the heart alive
Know their paths so patients will survive

[Verse 2]
Left main splits into two major streams
LAD descends fulfilling cardiac dreams
Circumflex wraps around the lateral wall
Right coronary feeds the inferior hall
Posterior descending from RCA flows
Or from circumflex depending how it goes
Dominance patterns you must understand
Right or left or co-dom take command

[Chorus]
Five coronaries dancing through the heart
Left main, LAD, circumflex from the start
Right coronary artery takes its stand
Posterior descending completes the band
Map them out before you make your incision
Anomalous origins need recognition
Five coronaries keep the heart alive
Know their paths so patients will survive

[Bridge]
When origins are wrong, disaster waits
Surgical injury seals the heart's fate
CT angiography shows the way
Catheterization saves the day
Never assume the normal course
Verify first with imaging force

[Chorus]
Five coronaries dancing through the heart
Left main, LAD, circumflex from the start
Right coronary artery takes its stand
Posterior descending completes the band
Map them out before you make your incision
Anomalous origins need recognition
Five coronaries keep the heart alive
Know their paths so patients will survive

[Outro]
Sinuses of Valsalva hold the key
Coronary perfusion sets hearts free
Five vessels in their perfect design
Map them first and surgery will shine

2. 4 The Normal Aortic Arch and Great Vessel Branching

[Verse 1]
From the heart the aorta rises high
Curves to the left across the sky
Over the left main bronchus it goes
That's the pathway that nature chose
Three branches split in perfect order
Like a tree across the border

[Chorus]
Brachiocephalic first in line
Left carotid next in time
Left subclavian makes it three
Down the spine runs free
Normal arch goes left you see
That's anatomy's decree

[Verse 2]
Brachiocephalic splits in two
Right carotid and subclavian too
While the left side keeps it clean
Carotid and subclavian stay lean
Separate branches on the left
No splitting, no bereft

[Chorus]
Brachiocephalic first in line
Left carotid next in time
Left subclavian makes it three
Down the spine runs free
Normal arch goes left you see
That's anatomy's decree

[Bridge]
But when the arch decides to flip
Takes a right side trip
Over right bronchus it will sail
Mirror image tells the tale
Right arch means the pattern's switched
All the branches get re-pitched

[Verse 3]
Descending thoracic aorta flows
Down the left side as it goes
Running parallel to spine
Blood supply in perfect line
From the arch to abdomen
Life's river flows again

[Chorus]
Brachiocephalic first in line
Left carotid next in time
Left subclavian makes it three
Down the spine runs free
Normal arch goes left you see
That's anatomy's decree

[Outro]
Left is normal, right's the change
When the pattern rearranges
Three branches in their sacred dance
Give the body its life chance

3. 1 The Fundamental Defect

[Verse 1]
When development goes wrong from the start
The aorticopulmonary septum never forms apart
No division between the vessels two
Just one big trunk for blood to travel through

The truncus stands alone and wide
Straddling both ventricles side by side
Systemic, pulmonary, coronary flow
All from one vessel, high and low

[Chorus]
Never formed, never came down
The septum that should divide is nowhere to be found
One trunk, two hearts, blood mixing free
VSD below for all to see
Never formed, that's the key
Truncus arteriosus type II

[Verse 2]
The conotruncal septum should descend
To close the upper gap and bring division's end
But when it fails to make its way
A ventricular septal defect stays

Blood from left and right ventricles blend
Through the opening that will never mend
Into the truncus they both pour
Mixed blood flowing evermore

[Chorus]
Never formed, never came down
The septum that should divide is nowhere to be found
One trunk, two hearts, blood mixing free
VSD below for all to see
Never formed, that's the key
Truncus arteriosus type II

[Bridge]
Two vessels should have been the plan
Aorta and pulmonary, separate they should stand
But nature's blueprint went astray
Left us with one trunk today

Always a VSD you'll find
The conotruncal gap left behind
Single vessel, double load
Carrying blood down every road

[Chorus]
Never formed, never came down
The septum that should divide is nowhere to be found
One trunk, two hearts, blood mixing free
VSD below for all to see
Never formed, that's the key
Truncus arteriosus type II

[Outro]
Remember this fundamental flaw
The septum that development never saw
Never formed, never there
One trunk for all the blood to share

4. 1 Normal Fetal Cardiac Development

[Verse 1]
Day twenty comes and life begins to beat
A single tube of heart so incomplete
Five chambers lined up straight in a row
Sinus to truncus, watch the blood flow
Splanchnic mesoderm forms the primitive start
One pipe, one vessel, a simple heart

[Chorus]
From tube to pump in seven weeks' time
D-loop and septate, everything's aligned
Neural crest cells migrate down below
Split the truncus, make two vessels grow
Aorta, pulmonary, side by side
Normal development, our perfect guide

[Verse 2]
Week four arrives, the bending starts
S-shaped looping moves the parts
Dextro-looping to the right
Ventricles finding position just right
If this goes wrong, the heart's misplaced
But normal looping keeps it all in space

[Chorus]
From tube to pump in seven weeks' time
D-loop and septate, everything's aligned
Neural crest cells migrate down below
Split the truncus, make two vessels grow
Aorta, pulmonary, side by side
Normal development, our perfect guide

[Verse 3]
Weeks four through seven, the walls appear
Septa divide what once was clear
Interatrial splits the common space
Foramen ovale keeps the fetal pace
Interventricular grows from the floor
Muscular first, then membranous more

[Bridge]
Conotruncal septation is the key
Neural crest cells set the vessels free
From brain and spine they travel far
To split the trunk where two tubes are
Without these cells, truncus remains
One vessel where there should be twains

[Chorus]
From tube to pump in seven weeks' time
D-loop and septate, everything's aligned
Neural crest cells migrate down below
Split the truncus, make two vessels grow
Aorta, pulmonary, side by side
Normal development, our perfect guide

[Outro]
When septation fails, truncus stays whole
One vessel playing both vessels' role
But when it works, the heart's complete
Four chambers strong with perfect beat

5. 3 Normal Valve Function

[Verse 1]
Every heart valve has a simple task to do
Let the blood flow forward, block the backward too
Four guardians working in perfect harmony
Keeping circulation flowing naturally

[Chorus]
Open when it's time to go
Close when it's time to hold
Semilunar, AV too
Forward flow and backward block
That's what normal valves all do
Forward flow and backward block

[Verse 2]
Aortic and pulmonary, semilunar style
Three cusps shaped like crescents, half-moon profile
When ventricles contract, pressure makes them swing
When diastole arrives, they snap shut with a ring

[Chorus]
Open when it's time to go
Close when it's time to hold
Semilunar, AV too
Forward flow and backward block
That's what normal valves all do
Forward flow and backward block

[Verse 3]
Mitral and tricuspid, AV design
Chordae tendineae keep them in perfect line
Papillary muscles anchor them in place
Stop prolapse backward, keep them in their space

[Bridge]
S2 is the sound when semilunar close
Aortic first, then pulmonary follows
Split timing normal, that's the way it goes
Regurgitation leaks, stenosis narrows

[Verse 4]
When valves start failing, hearts must work much harder
Leaking blood backward or restriction's barrier
Regurgitation means the valve won't hold
Stenosis means it's narrow, won't unfold

[Final Chorus]
Open when it's time to go
Close when it's time to hold
Four valves working as they should
Forward flow and backward block
Keep the circulation good
Forward flow and backward block

[Outro]
Simple job for every valve
Forward flow and backward solve

6. 2 Normal Four-Chamber Heart Anatomy

[Verse 1]
Inside your chest beats a dual pump machine
Four chambers working in perfect routine
Right side takes the blue blood flowing back home
Through vena cava to where it belongs

The right atrium catches what the body returns
Superior, inferior, coronary burns
Through tricuspid valve with its three-leaflet door
Into right ventricle, thin-walled for sure

[Chorus]
Two sides, four chambers, one beating heart
Right side to lungs, left side restart
Low pressure twenty to thirty on right
High pressure hundred-twenty takes flight
Remember the flow, remember the way
Dual pump system working all day

[Verse 2]
Right ventricle crescent pumps blood with ease
Through pulmonary valve to arteries
Left and right branches carry blue blood along
To lung capillaries where gas exchange is strong

Carbon dioxide diffuses right out
Oxygen enters without any doubt
Ninety-eight percent saturation complete
Oxygenated blood ready to meet

[Chorus]
Two sides, four chambers, one beating heart
Right side to lungs, left side restart
Low pressure twenty to thirty on right
High pressure hundred-twenty takes flight
Remember the flow, remember the way
Dual pump system working all day

[Verse 3]
Left atrium receives from pulmonary veins
Four vessels bringing what the body gains
Through mitral valve with its two-leaflet gate
Into left ventricle, thick walls await

The powerhouse chamber, cone-shaped and strong
Pumps red blood through aorta along
Systemic circulation feeds every part
This is your normal four-chamber heart

[Chorus]
Two sides, four chambers, one beating heart
Right side to lungs, left side restart
Low pressure twenty to thirty on right
High pressure hundred-twenty takes flight
Remember the flow, remember the way
Dual pump system working all day

[Bridge]
Tricuspid right, mitral on left
Three leaflets here, two leaflets there
Semilunar valves guard the exit routes
Pulmonary, aortic, follow the suit

[Outro]
From body to right to lungs and back
Left side pumps red through aortic track
Four chambers, two circuits, one perfect design
Your heart keeps the rhythm, your lifeline

7. 2 How Blood Flows in Truncus Arteriosus — Compared to Normal

[Verse 1]
In a normal heart the pathways are clear
Two separate vessels, the design is so dear
Right ventricle pumps to pulmonary artery alone
Left ventricle sends blood through aorta it's known
No mixing occurs, the circuits stay true
One hundred percent oxygen coming through

[Chorus]
But truncus arteriosus changes the game
One vessel, one valve, it's not quite the same
Complete mixing happens when blood flows as one
Eighty to ninety percent when the pumping is done
Blue tinged and cyanotic, the oxygen's low
That's how truncus arteriosus disrupts normal flow

[Verse 2]
Deoxygenated blood from the right ventricle starts
While oxygenated flows from the left chamber's parts
They meet at the VSD, that hole in between
Then enter one truncus, a mixing machine
To body and lungs the mixed blood will go
Partial oxygenation wherever it flows

[Chorus]
But truncus arteriosus changes the game
One vessel, one valve, it's not quite the same
Complete mixing happens when blood flows as one
Eighty to ninety percent when the pumping is done
Blue tinged and cyanotic, the oxygen's low
That's how truncus arteriosus disrupts normal flow

[Bridge]
Normal hearts keep it separate and clean
Pulmonary and aortic, two vessels are seen
But truncus means sharing, no separation here
One common vessel makes the problem so clear

[Chorus]
Yes truncus arteriosus changes the game
One vessel, one valve, it's not quite the same
Complete mixing happens when blood flows as one
Eighty to ninety percent when the pumping is done
Blue tinged and cyanotic, the oxygen's low
That's how truncus arteriosus disrupts normal flow

[Outro]
Remember the difference, it's vital to know
Two separate vessels make normal hearts glow
But one truncus vessel means mixing will be
The cause of cyanosis that we clearly see

8. 3 The Hemodynamic Catastrophe

[Verse 1]
When the baby's born and takes that first breath
Pulmonary resistance starts to fall
But in truncus arteriosus, that spells death
High pressure floods where it shouldn't go at all
The lungs become the path of least resistance
Blood gets stolen from the body's needs
While the heart pumps harder in persistence
Fighting a battle that it cannot win with speed

[Chorus]
Pulmonary overcirculation
Stealing blood from circulation
Heart failure, edema, poor perfusion
This is hemodynamic confusion
Tick tock, the clock is running down
Three to six months till the damage can't turn around
Eisenmenger's coming to town
When the vessels thicken and shut it down

[Verse 2]
Both ventricles dilate from volume overload
Pumping massive amounts but nothing's getting through
The liver swells from back-pressure on the road
While the lungs fill up like morning dew
Tachypnea makes the feeding hard
Baby's growing slow, can't catch their breath
The systemic flow is being scarred
Racing against time to prevent their death

[Chorus]
Pulmonary overcirculation
Stealing blood from circulation
Heart failure, edema, poor perfusion
This is hemodynamic confusion
Tick tock, the clock is running down
Three to six months till the damage can't turn around
Eisenmenger's coming to town
When the vessels thicken and shut it down

[Bridge]
High pressure, high flow
Makes the arterioles grow
Thickening walls, constricting tight
Soon they'll close up day and night
Once Eisenmenger takes its hold
Surgery's off the table, story's told
Irreversible, the damage done
The battle's lost, cannot be won

[Chorus]
Pulmonary overcirculation
Stealing blood from circulation
Heart failure, edema, poor perfusion
This is hemodynamic confusion
Tick tock, the clock is running down
Three to six months till the damage can't turn around
Eisenmenger's coming to town
When the vessels thicken and shut it down

[Outro]
The mixing's just the start you see
The real danger is where blood flows free
To lungs that can't handle the pressure load
Time's running out on this dangerous road

9. 4 The Truncal Valve

[Verse 1]
Where the aortic valve should be
Sits a valve that's made uniquely
Two or three or four leaflets there
Most commonly three we declare
Never designed for double duty
It may leak or narrow truly
Even if it works at birth
Time will show its lessened worth

[Chorus]
Truncal valve, truncal valve
Where the aorta should resolve
Two three four leaflets in the way
Neo-aortic it will stay
Leaky stenotic or both combined
Degeneration over time
Remember this for life ahead
It determines what lies ahead

[Verse 2]
Because it wasn't meant to split
Into two valves that properly fit
Regurgitant flow may appear
Or stenosis we should fear
Leaflets that are abnormal grown
Cannot function like our own
Acceptable at birth it seems
But long-term it haunts our dreams

[Chorus]
Truncal valve, truncal valve
Where the aorta should resolve
Two three four leaflets in the way
Neo-aortic it will stay
Leaky stenotic or both combined
Degeneration over time
Remember this for life ahead
It determines what lies ahead

[Bridge]
After repair is complete
This valve makes circulation meet
Neo-aortic is its name
Systemic flow is now its game
Long-term behavior tells the tale
Will future surgery prevail
The only valve for systemic flow
Its fate determines what we'll know

[Chorus]
Truncal valve, truncal valve
Where the aorta should resolve
Two three four leaflets in the way
Neo-aortic it will stay
Leaky stenotic or both combined
Degeneration over time
Remember this for life ahead
It determines surgery ahead

[Outro]
Truncal valve determines fate
Aortic surgery we may wait
Neo-aortic standing lone
Time will tell what it has grown

10. 5 Classification — Where Do the Pulmonary Arteries Come From?

[Verse 1]
Back in nineteen forty-nine, Collett and Edwards drew the line
Four types of truncus, where do arteries align?
Type One's got a short main trunk, sixty percent of cases spunk
Left side sprouting, then it splits, that's how the normal pattern fits

[Chorus]
Where do pulmonary arteries come from?
Classification tells us how they run
Type One short main, Type Two separate doors
Type Three wide apart, Type Four needs more
Collett Edwards, Van Praagh too
Teaching us what doctors need to know

[Verse 2]
Type Two's our patient here tonight, twenty to thirty percent right
No main segment to be found, separate ostia all around
Left posterior surface shows, where each artery grows and flows
Adjacent doors but standing lone, each PA has its own home

[Chorus]
Where do pulmonary arteries come from?
Classification tells us how they run
Type One short main, Type Two separate doors
Type Three wide apart, Type Four needs more
Collett Edwards, Van Praagh too
Teaching us what doctors need to know

[Bridge]
Type Three widely separated walls, ten percent of all the calls
Type Four was reclassified, pulmonary atresia's side
Van Praagh came in sixty-five, kept the knowledge alive
A-one through A-four he made, different system, different grade

[Verse 3]
Our case shows the spiral course, left PA takes anterior force
Superior positioning clear, right PA posterior here
Inferior pathway it will take, no main segment for heaven's sake
Type Two classic presentation, spiral course demonstration

[Chorus]
Where do pulmonary arteries come from?
Classification tells us how they run
Type One short main, Type Two separate doors
Type Three wide apart, Type Four needs more
Collett Edwards, Van Praagh too
Teaching us what doctors need to know

[Outro]
Two systems help us understand
Where pulmonary vessels stand
Classification is the key
To truncus anatomy

11. 7 Clinical Presentation at Admission

[Verse 1]
Six weeks old, brought in today
Heart rate high at one-six-five
Compensating all the way
Fighting hard to stay alive
Volume overload's the game
When the blood flows without shame

[Chorus]
One-six-five beats racing fast
Forty-five breaths, can't make them last
Liver's down two below the line
Eighty over fifty's the pressure sign
Ninety-five percent oxygen flow
Truncus symptoms start to show

[Verse 2]
Respiratory rate's climbing high
Forty-five per minute count
Pulmonary circuit's overdriven why
Too much blood, excessive amount
Overcirculation's the key
When the vessels can't run free

[Chorus]
One-six-five beats racing fast
Forty-five breaths, can't make them last
Liver's down two below the line
Eighty over fifty's the pressure sign
Ninety-five percent oxygen flow
Truncus symptoms start to show

[Bridge]
Hepatomegaly tells the tale
Two centimeters past the mark
Heart failure makes the liver swell
But no edema in the dark
Wide pulse pressure running off
Diastolic pressure drops right off

[Verse 3]
Blood pressure shows the wider gap
Eighty systolic, fifty low
Diastolic falls into the trap
Pulmonary steal's the flow
Oxygen's maintained quite well
Though mixing occurs, you can tell

[Chorus]
One-six-five beats racing fast
Forty-five breaths, can't make them last
Liver's down two below the line
Eighty over fifty's the pressure sign
Ninety-five percent oxygen flow
Truncus symptoms start to show

[Outro]
No peripheral swelling yet
Volume overload's the threat
Unrestricted flow's the clue
Heart failure's breaking through

12. 6 Associated Anomalies

[Verse 1]
When truncus comes, it's never alone
Six friends that tag along, make themselves known
VSD's the first, always there to stay
Subarterial hole, thirteen to fifteen millimeter way

[Verse 2]
Right aortic arch in thirty percent
Mirror image branching, the vessels are bent
Left brachiocephalic, right CCA too
Right subclavian artery, that's how they grew

[Chorus]
Six associations, remember them well
VSD and right arch, their stories to tell
Patent foramen, interrupted arch
Truncal valve problems, genetics to march
DiGeorge deletion, coronaries strange
Truncus arteriosus brings anatomic change

[Verse 3]
Patent foramen ovale, three millimeter wide
Left to right shunting, blood takes a ride
But interrupted aortic arch we might see
Ten to fifteen percent, check carefully

[Verse 4]
Truncal valve tricuspid, competent and clean
But abnormalities common, know what they mean
From stenosis to regurgitation's flow
Pre-op assessment, that's what we need to know

[Chorus]
Six associations, remember them well
VSD and right arch, their stories to tell
Patent foramen, interrupted arch
Truncal valve problems, genetics to march
DiGeorge deletion, coronaries strange
Truncus arteriosus brings anatomic change

[Bridge]
Twenty-two q eleven point two deletion
Thirty-five percent need our attention
Small thymus gland and hypocalcemia
Immune deficiency, palatal anemia

[Verse 5]
Coronary arteries anomalous grown
Surgical planning, their course must be known
Each association matters for the heart
Plan your repair right from the start

[Chorus]
Six associations, remember them well
VSD and right arch, their stories to tell
Patent foramen, interrupted arch
Truncal valve problems, genetics to march
DiGeorge deletion, coronaries strange
Truncus arteriosus brings anatomic change

[Outro]
Never alone, these six come to play
Learn each association, save the day

13. 1 Echocardiography

[Verse 1]
When a newborn's heart needs scanning
Echo is our guiding light
Single vessel overriding
Makes the VSD so bright
Primary tool for diagnosis
Shows us what we need to see
Truncus arteriosus calling
Echo sets the pathway free

[Chorus]
Echo tells the story clear
PA branches, valve, and more
Count the leaflets, check for leak
Measure what we're looking for
Nakata index, Z-scores too
Gradients across the valve
Serial tracking guides us through
Every puzzle we must solve

[Verse 2]
Truncal valve morphology
How many leaflets can you count
Regurgitation severity
Every detail paramount
Map the PA branch origins
Measure sizes left and right
Associated anomalies
ASD brings into sight

[Chorus]
Echo tells the story clear
PA branches, valve, and more
Count the leaflets, check for leak
Measure what we're looking for
Nakata index, Z-scores too
Gradients across the valve
Serial tracking guides us through
Every puzzle we must solve

[Bridge]
Aortic arch sidedness matters
Interruption we must find
Ventricular function status
Keep these measurements in mind
VSD and residual shunts
EF percentage tracking strong
Every echo tells a story
Helps us get the treatment right

[Verse 3]
Serial measurements are golden
PA diameters we track
Z-scores paint the bigger picture
Never let our guard go slack
Truncal valve gradient rising
Regurgitation getting worse
Echo guides our clinical judgment
Through each monitoring course

[Chorus]
Echo tells the story clear
PA branches, valve, and more
Count the leaflets, check for leak
Measure what we're looking for
Nakata index, Z-scores too
Gradients across the valve
Serial tracking guides us through
Every puzzle we must solve

[Outro]
Echo is our trusted ally
In truncus arteriosus care
Every scan reveals the answers
Hidden in the chambers there

14. 3 Cardiac Catheterization

[Verse 1]
When the heart's structure isn't right
Truncus arteriosus in our sight
One vessel where there should be two
Cardiac cath will guide us through
Insert the wire, thread with care
To chambers deep, we venture there

[Chorus]
Pressure and saturation, measure what we find
PVR calculation, operability defined
Diagnostic and interventional, two paths in one line
Cardiac catheterization, making hearts align

[Verse 2]
Ten months old with conduit tight
Stenosis blocking proper flight
The pressures tell us what's inside
While oxygen levels are our guide
From right to left, we map each zone
Making abnormal hearts our own

[Chorus]
Pressure and saturation, measure what we find
PVR calculation, operability defined
Diagnostic and interventional, two paths in one line
Cardiac catheterization, making hearts align

[Bridge]
When resistance climbs too high
Surgery we can't apply
But when the numbers look just right
We can restore the flow of life
Balloon or stent, we choose our tool
Interventional cardiology's jewel

[Verse 3]
Direct measurement beats the guess
Chamber pressures under stress
Calculate the vascular resistance
Determines surgical assistance
From diagnostic to repair
One procedure, comprehensive care

[Chorus]
Pressure and saturation, measure what we find
PVR calculation, operability defined
Diagnostic and interventional, two paths in one line
Cardiac catheterization, making hearts align

[Outro]
Wire in hand, we navigate
The chambers that communicate
One test to rule them all we find
Cardiac cath, peace of mind

15. 4 Genetic Testing

[Verse 1]
When truncus arteriosus shows its face
There's a test we need in every case
Twenty-two q eleven point two deletion
Start the genetic investigation

Don't wait or wonder, don't delay
FISH or microarray today
Every patient needs this screen
Most important test you've ever seen

[Chorus]
Test them all, test them all
Twenty-two q eleven call
FISH or microarray shine
Catch the deletion every time
Small thymus on the CT scan
Genetic workup, that's the plan
Test them all, don't let it fall
Twenty-two q deletion call

[Verse 2]
CT chest reveals a tiny thymus
This small clue should really remind us
When the shadow's not the normal size
Genetic testing's what we advise

The deletion hides in chromosome bands
But modern testing helps us understand
Fluorescent probes will light the way
Microarrays save the day

[Chorus]
Test them all, test them all
Twenty-two q eleven call
FISH or microarray shine
Catch the deletion every time
Small thymus on the CT scan
Genetic workup, that's the plan
Test them all, don't let it fall
Twenty-two q deletion call

[Bridge]
If positive results appear
Three referrals you hold dear
Immunology first in line
Calcium levels monitor fine
Speech and development assess
Cover all the bases, nothing less

[Verse 3]
When the test comes back positive
Three pathways now you have to give
Immune system needs attention
Calcium drops need prevention

Speech delays and learning too
Developmental check is overdue
Comprehensive care's the key
For twenty-two q deletion, you see

[Chorus]
Test them all, test them all
Twenty-two q eleven call
FISH or microarray shine
Catch the deletion every time
Small thymus on the CT scan
Genetic workup, that's the plan
Test them all, don't let it fall
Twenty-two q deletion call

[Outro]
Every truncus patient screened
Best outcomes can be achieved
Twenty-two q deletion found
Comprehensive care all around

16. 2 CT Angiography

[Verse 1]
When a newborn's heart needs mapping clear
CT angiography draws near
Spatial resolution shows the way
Every vessel branch display
Pulmonary arteries wind and bend
Unusual courses we comprehend
Three-dimensional views reveal the truth
Critical planning from the booth

[Chorus]
Spiral PA, right-sided arch
Aberrant branches on the march
Type one-two truncus in the frame
CTA shows the cardiac game
Origins mapped, the coronaries bright
Surgical planning done just right
Every vessel, every bend
CTA helps the surgeon mend

[Verse 2]
Aortic arch anatomy defined
Branching patterns well outlined
Brachiocephalic takes a different route
Aberrant pathway, there's no doubt
Right-sided arch instead of left
Normal positioning has been cleft
Three days old, the story's told
Through contrast medium, liquid gold

[Chorus]
Spiral PA, right-sided arch
Aberrant branches on the march
Type one-two truncus in the frame
CTA shows the cardiac game
Origins mapped, the coronaries bright
Surgical planning done just right
Every vessel, every bend
CTA helps the surgeon mend

[Bridge]
ASD and VSD complete the scene
Septal defects on the screen
Coronary origins critical to see
Where do they arise anatomically
From the truncal root they spring
Surgical planning's everything
One wrong cut could seal the fate
CTA prevents that tragic date

[Chorus]
Spiral PA, right-sided arch
Aberrant branches on the march
Type one-two truncus in the frame
CTA shows the cardiac game
Origins mapped, the coronaries bright
Surgical planning done just right
Every vessel, every bend
CTA helps the surgeon mend

[Outro]
Excellence in resolution
Provides the perfect solution
For truncus cases, complex and rare
CTA shows us what is there

17. 1 The Goal of Surgery

[Verse 1]
When embryology fails to make it right
One trunk feeds both the body and lung sight
Blood floods the pulmonary bed too high
Systemic pressure makes the vessels cry
We need to fix what nature didn't do
Create two paths where there was only one route through

[Chorus]
Disconnect, close, establish, repair, and seal
Five steps to make the circulation real
Separate the pathways, give each heart its role
That's the surgeon's ultimate goal
Two circuits flowing, no more mixing blood
Truncus repair restores the normal flood

[Verse 2]
First disconnect those pulmonary trees
From the truncus where they shouldn't be
Then close the VSD with a sturdy patch
Left ventricle gets its exclusive catch
The truncus becomes the new aorta now
One chamber, one outflow, that's how

[Chorus]
Disconnect, close, establish, repair, and seal
Five steps to make the circulation real
Separate the pathways, give each heart its role
That's the surgeon's ultimate goal
Two circuits flowing, no more mixing blood
Truncus repair restores the normal flood

[Bridge]
Right ventricle needs a brand new way
A conduit with valve will save the day
Patch the hole where arteries were torn
Close any shunt where mixing was born
Before repair: both ventricles mixed and flowed
After repair: each takes its destined road

[Verse 3]
Right side pumps through conduit to lung
Left side through truncal valve gets blood flung
To body tissues that were starved before
Now oxygen-rich blood reaches every shore
Two separate circuits, no more compromise
The goal achieved before our very eyes

[Final Chorus]
Disconnect, close, establish, repair, and seal
Five steps to make the circulation real
Right ventricle to lungs, left ventricle to body
Truncus repair makes circulation godly
Two circuits flowing, no more mixing blood
Surgery completes what embryology should

[Outro]
From single trunk to dual circulation
Surgery provides the separation
The goal complete, the heart beats true
Two pathways where there once was two

18. 2 Timing

[Verse 1]
When a baby's born with truncus arteriosus type two
One vessel carries blood where there should be two
The clock starts ticking from the moment that they're born
Time is precious, can't let opportunity be torn

[Chorus]
Two to four weeks is the golden window frame
Neonatal repair, that's the timing game
Don't delay or Eisenmenger will take hold
Pulmonary vessels damaged, story's told
Two to four weeks, keep that number in your mind
Early intervention saves the child in time

[Verse 2]
Pulmonary vascular disease creeps in slow
When pressure builds too high, resistance starts to grow
The vessels change their structure, walls become too thick
Irreversible damage happens way too quick

[Chorus]
Two to four weeks is the golden window frame
Neonatal repair, that's the timing game
Don't delay or Eisenmenger will take hold
Pulmonary vessels damaged, story's told
Two to four weeks, keep that number in your mind
Early intervention saves the child in time

[Bridge]
This patient at six weeks, still within the zone
Surgical repair can make their heart their own
Standard protocol says act while vessels bend
Before the damage reaches its bitter end

[Verse 3]
Eisenmenger syndrome, the dreaded complication
Right to left shunting, cyanotic presentation
Once it's established, surgery's off the table
That's why early timing is so critical and stable

[Chorus]
Two to four weeks is the golden window frame
Neonatal repair, that's the timing game
Don't delay or Eisenmenger will take hold
Pulmonary vessels damaged, story's told
Two to four weeks, keep that number in your mind
Early intervention saves the child in time

[Outro]
Remember the window, two to four weeks clear
Early truncus repair keeps the future near
Six weeks acceptable, but don't push your luck
Time is everything when vessels can get stuck

19. 3 Surgical Technique — Step by Step

[Verse 1]
First we open up the chest with sternotomy
Cut the breastbone straight to see the heart clearly
Hook up the bypass machine to take control
Blood flows through circuits while the heart stays still

[Verse 2]
Remove the thymus gland to clear the way
Study the anatomy before we operate today
See the spiral pattern of the PA course
Left branch anterior, right posterior force

[Chorus]
Step by step we reconstruct
Separate, repair, redirect
Close the holes with pericardial patches strong
Guide the blood flow where it belongs
Type Two truncus needs precision and care
Build two pathways from the single vessel there

[Verse 3]
Detach each PA branch from its own door
Two separate ostia like we've seen before
Carefully dissect and free each artery
Leaving holes in the truncal wall to see

[Verse 4]
Patch those holes with treated pericardium
Glutaraldehyde makes it strong and durable
Now the truncus serves as neo-aorta alone
A single pipe to call the left heart's home

[Chorus]
Step by step we reconstruct
Separate, repair, redirect
Close the holes with pericardial patches strong
Guide the blood flow where it belongs
Type Two truncus needs precision and care
Build two pathways from the single vessel there

[Bridge]
Right ventriculotomy opens up the wall
Avoid the coronary vessels, plan it all
Through the incision place the VSD patch tight
Left ventricle to truncus, that's the aortic flight

[Outro]
Right ventricle blood needs its own way out
Through the conduit, there's no doubt
Two circuits working as they should
Truncus repair done right and good

20. 4 Types of RV-PA Conduits

[Verse 1]
When truncus needs repair, we build a pathway new
From right ventricle to PA, here's what we can do
Pulmonary homograft leads the pack with perfect flow
Cadaveric PA with valve, best hemodynamics show
But limited supply and calcification's price
Especially small sizes, availability's not nice

[Chorus]
Four conduits to choose from, each one has its place
Homografts and synthetics in this cardiac space
But remember the truth that every surgeon knows
No conduit grows with children, that's how the story goes
Multiple replacements through their lifetime ahead
Three to five operations, that's the path we tread

[Verse 2]
Aortic homograft brings more availability
Cadaveric vessel with valve, better supply we see
But oversizing happens and calcification too
Gore-Tex synthetic offers sizing that's true
PTFE material with consistent dimension
But higher gradients and stenosis prevention

[Chorus]
Four conduits to choose from, each one has its place
Homografts and synthetics in this cardiac space
But remember the truth that every surgeon knows
No conduit grows with children, that's how the story goes
Multiple replacements through their lifetime ahead
Three to five operations, that's the path we tread

[Bridge]
Bovine jugular, Contegra's the name
Very small sizes available in this game
But endocarditis risk and distal stenosis wait
Hancock porcine valve has a track record great
Porcine valve in Dacron, long-term data's strong
But calcification and small sizes don't last long

[Verse 3]
Twelve millimeter conduit for a newborn's tiny chest
Four and half kilos, it fits them at their best
But as they grow bigger, that conduit stays the same
Stenosis develops, back to surgery again
This is the reality we must help families see
Lifetime of operations, that's the guarantee

[Outro]
Choose your conduit wisely, weigh each advantage clear
But know that growth means change, year after year
From homografts to synthetics, each has its role
Multiple revisions, that's the long-term goal

21. 5 The Immediate Post-Operative State

[Verse 1]
The surgery is done, the heart's been repaired
But now two ventricles face changes they've never shared
Right ventricle pumps through a conduit with resistance
Left ventricle works alone, needs some assistance

The RV used to flow through truncus so free
Now faces higher pressure, works harder you see
The LV shared workload through that VSD hole
Now bears systemic pressure, takes full control

[Chorus]
Post-op heart needs time to adapt and heal
Dopamine strength, Levosimendan feel
Furosemide flows the fluid away
Asparkam replaces what diuretics take
Cefuroxime protects, Aspirin prevents clots
Six medications working, connecting the dots

[Verse 2]
Both chambers are stunned from bypass machine
Surgical manipulation leaves them not quite clean
The hemodynamics shifted, circulation's new
Recovery takes time for these changes to get through

Seven days later we echo and see
Left ventricular function dropped to fifty-three
From seventy percent before the repair
Post-bypass depression, but we knew it'd be there

[Chorus]
Post-op heart needs time to adapt and heal
Dopamine strength, Levosimendan feel
Furosemide flows the fluid away
Asparkam replaces what diuretics take
Cefuroxime protects, Aspirin prevents clots
Six medications working, connecting the dots

[Bridge]
Right ventricle's working, conduit gradient thirty
VSD residual tiny, nothing too dirty
PA branches measure four point five millimeters
All the numbers looking good on our recovery meters

[Verse 3]
Calcium sensitizer helps the heart squeeze tight
Without more oxygen demand, keeps energy light
Loop diuretics manage all that excess fluid
Potassium magnesium keeps rhythms not putrid

Prophylactic antibiotics guard against infection
Antiplatelet therapy gives prosthetic protection
This immediate post-op phase requires careful monitoring
Each medication chosen for specific conditioning

[Outro]
From single vessel truncus to separated flow
The heart learns new patterns, recovery's slow
But with proper support through this critical time
Two ventricle circulation will work just fine

22. 2 Clinical Significance

[Verse 1]
When the right subclavian takes a different route
Behind the esophagus, there's no dispute
It's hemodynamically kind and benign
No obstruction in the cardiac line
But surgeons need to know before they start
This aberrant path can change the art

[Chorus]
Map it out, plan it through
Every branch that's not on cue
Sternotomy approach must know
Where the vessels choose to go
Critical for surgery day
Aberrant patterns pave the way

[Verse 2]
Cannulation strategy shifts its course
When anatomy shows a different source
The conduit placement needs a careful hand
With vessels running through uncharted land
Before the scalpel makes its very first mark
These branching secrets must leave their spark

[Chorus]
Map it out, plan it through
Every branch that's not on cue
Sternotomy approach must know
Where the vessels choose to go
Critical for surgery day
Aberrant patterns pave the way

[Bridge]
Rarely forms a vascular ring
Airway compression it can bring
Esophageal squeeze from vessel's embrace
Future cath procedures need this base
Identify before you operate
Don't let aberrant patterns complicate

[Verse 3]
Vascular access planning takes a turn
When normal pathways aren't where vessels burn
Each intervention needs this roadmap clear
To keep complications from drawing near
The surgeon's eye must see what lies beneath
This aberrant crown without a wreath

[Chorus]
Map it out, plan it through
Every branch that's not on cue
Sternotomy approach must know
Where the vessels choose to go
Critical for surgery day
Aberrant patterns pave the way

[Outro]
In truncus type two, don't forget to see
Where vessels wander abnormally
Though hemodynamically it's benign
For surgical success, you must define

23. 1 Why the Conduit Inevitably Fails

[Verse 1]
A twelve millimeter conduit placed with care
Perfect size for baby's heart repair
But months go by and the child will grow
While the conduit stays the same you know
The fixed orifice becomes too tight
Creating pressure gradients overnight

[Chorus]
Growth mismatch, tissue growth
Valve decay, calcium both
External squeeze completes the show
Five reasons why conduits go
The Achilles heel will always fail
In truncus repair, it tells the tale

[Verse 2]
The body sees this foreign piece
And wraps it up, it won't release
Neointimal layers start to form
Inside the tube, becoming the norm
Pseudointima grows along the wall
Making the pathway far too small

[Chorus]
Growth mismatch, tissue growth
Valve decay, calcium both
External squeeze completes the show
Five reasons why conduits go
The Achilles heel will always fail
In truncus repair, it tells the tale

[Verse 3]
Three months post-op, the leaflets move
Seven months later, they don't groove
The valve mechanism starts to thick
Calcium makes the tissue stick
Stenosis mixed with regurg too
Leaflet motion's nearly through

[Bridge]
Between the ventricle and chest
The sternum puts it to the test
External compression takes its toll
Especially when the child is small
Biologic or synthetic made
They all will calcify and fade

[Chorus]
Growth mismatch, tissue growth
Valve decay, calcium both
External squeeze completes the show
Five reasons why conduits go
The Achilles heel will always fail
In truncus repair, it tells the tale

[Outro]
RV to PA, the weakest link
Five pathways to failure, stop and think
The conduit fails, it's guaranteed
Plan for replacement, that's what we need

24. 1 Embryology

[Verse 1]
In the embryo's early days
Paired aortic arches form in waves
Left and right side by side they grow
But only one is meant to show

[Verse 2]
Fourth arch on the left should stay
While the right one fades away
This normal pattern we must learn
For when development takes a turn

[Chorus]
Left fourth persists, right regresses
That's the normal way it processes
But when right fourth takes control
Conotruncal defects take their toll
Aortic arch development
Changes everything we've meant

[Verse 3]
Right aortic arch appears
When the right fourth perseveres
Left side fades instead of right
Flipping what should be our sight

[Verse 4]
This anomaly we see
Links to heart defects strongly
Truncus arteriosus waits
When development deviates

[Chorus]
Left fourth persists, right regresses
That's the normal way it processes
But when right fourth takes control
Conotruncal defects take their toll
Aortic arch development
Changes everything we've meant

[Bridge]
Paired arches start the same
But regression's not a game
Fourth arch persistence decides the fate
Will the heart develop straight

[Chorus]
Left fourth persists, right regresses
That's the normal way it processes
But when right fourth takes control
Conotruncal defects take their toll
Aortic arch development
Changes everything we've meant

[Outro]
Remember this association clear
Right arch and heart defects appear
Embryology tells the tale
When normal patterns start to fail

25. 2 How Conduit Stenosis Manifests

[Verse 1]
When the conduit starts to narrow down
The right ventricle must work much harder now
Normal pressure twenty to thirty max
But stenosis changes all the facts

Blood must flow from RV to PA
Through a passage getting tight each day
The heart pumps harder, pressure climbs
Racing against the test of time

[Chorus]
Pressure gradient tells the tale
When the conduit starts to fail
Rising numbers, warning signs
Suprasystemic pressure climbs
Gradient gap between RV and PA
Shows us how the stenosis plays
Watch the numbers, know the trend
Before the right heart meets its end

[Verse 2]
At two months old, thirty peak gradient
Little baby's heart still competent
Three months later, thirty-two's the score
Ten millimeter lumen, nothing more

But seven months brings alarming news
Sixty-seven peak, the pressure blues
Nine point eight millimeters left
Of passage through this narrowed cleft

[Chorus]
Pressure gradient tells the tale
When the conduit starts to fail
Rising numbers, warning signs
Suprasystemic pressure climbs
Gradient gap between RV and PA
Shows us how the stenosis plays
Watch the numbers, know the trend
Before the right heart meets its end

[Bridge]
Mean gradient thirty-seven high
Leaflet motion restricted, why?
RV pressure beats the left
Suprasystemic, hope bereft

Hypertrophy starts to grow
When the pressure's got nowhere to go
Intervention saves the day
Brings that gradient back our way

[Verse 3]
Post procedure, forty-eight peak
Forty-six RV, no longer bleak
The conduit's breathing room restored
Though regurgitation now's on board

Monitor closely, watch for signs
Rising gradients, pressure lines
Early action saves the heart
When we catch stenosis from the start

[Outro]
Pressure gradient tells the story
Of conduit stenosis, warning glory
Rising numbers never lie
Suprasystemic pressure's cry
Watch the gap and intervene
Keep that conduit running clean

26. 3 Intervention Thresholds

[Verse 1]
When the right ventricle's pressure starts to climb
Two thirds of systemic is the warning sign
The heart is struggling, working way too hard
Time for intervention, don't let down your guard

[Chorus]
Three thresholds to remember, watch them all with care
Pressure climbing high, gradient's burden there
Regurgitation flowing back, dilation everywhere
Two thirds systemic pressure, forty to fifty beware
When symptoms start appearing, it's time to prepare

[Verse 2]
Peak conduit gradient rising past the line
Forty to fifty millimeters, that's the sign
Right ventricle dilating, function's going down
The pathway's getting narrow, restriction can be found

[Chorus]
Three thresholds to remember, watch them all with care
Pressure climbing high, gradient's burden there
Regurgitation flowing back, dilation everywhere
Two thirds systemic pressure, forty to fifty beware
When symptoms start appearing, it's time to prepare

[Verse 3]
Conduit regurgitation lets the blood flow back
Progressive RV dilation puts the heart on track
For failure and dysfunction, chambers growing wide
The valve is leaking backward, nowhere left to hide

[Bridge]
Exercise intolerance tells the story clear
Cyanosis paints them blue, syncope brings fear
Clinical symptoms warning that the time has come
When any threshold's crossed, the waiting days are done

[Chorus]
Three thresholds to remember, watch them all with care
Pressure climbing high, gradient's burden there
Regurgitation flowing back, dilation everywhere
Two thirds systemic pressure, forty to fifty beware
When symptoms start appearing, it's time to prepare

[Outro]
Truncus arteriosus, type two needs repair
Watch these three thresholds, intervention's always there

27. 4 Interventional Options

[Verse 1]
At ten months old the conduit's tight
RV pressure climbing way too high
Ninety over seventy-five tonight
The right ventricle's working overtime
Through the vein we thread the wire
Balloon catheter takes us higher
Into the stenotic space we go
Inflate and stretch, watch pressure flow

[Chorus]
Four ways to fix the narrow path
Balloon and stent, valve, surgery's wrath
From ninety down to forty-six
These interventions do the tricks
When conduits fail and pressures rise
We have four tools to save their lives
Balloon, stent, valve, or replace
Each option finds its time and place

[Verse 2]
Post-balloon the numbers tell the tale
Forty-six where ninety used to sail
Subsystemic now instead of high
Twenty gradient remaining, that's just fine
But balloons alone won't hold for long
That's where metal stents belong
Wire mesh to keep the lumen wide
Re-dilatable as patients grow in size

[Chorus]
Four ways to fix the narrow path
Balloon and stent, valve, surgery's wrath
From ninety down to forty-six
These interventions do the tricks
When conduits fail and pressures rise
We have four tools to save their lives
Balloon, stent, valve, or replace
Each option finds its time and place

[Bridge]
Melody valve or SAPIEN too
Transcatheter replacement, something new
Sixteen millimeter landing zone
Pre-stenting helps when conduits have grown
But when all catheter options fade away
Surgical replacement saves the day
Remove the old, put in the new
A lifetime journey, tried and true

[Verse 3]
Each intervention buys us time
Palliative steps in treatment's climb
From simple balloon to complex stent
To valve replacement, pressure's spent
And when technology can't reach the goal
Surgery steps in to make them whole
Multiple times throughout their years
Each option calms the parents' fears

[Chorus]
Four ways to fix the narrow path
Balloon and stent, valve, surgery's wrath
From ninety down to forty-six
These interventions do the tricks
When conduits fail and pressures rise
We have four tools to save their lives
Balloon, stent, valve, or replace
Each option finds its time and place

[Outro]
Progressive steps from least to most
Each technique deserves its boast
Truncus patients need them all
These four options help them grow tall

28. 2 Neo-Aortic (Truncal) Valve Regurgitation

[Verse 1]
When the repair is done and healing starts
The truncal valve now guards your beating heart
It's the only gate for blood to flow
To your body head to toe
But hidden flaws may start to show

[Chorus]
Neo-aortic valve, watch it well
Regurgitation time will tell
Mild today but years ahead
Structural changes we must dread
Monitor for life, that's what we do
The valve that once was truncal too

[Verse 2]
Subtle problems underneath the surface lie
What looks stable now may change with time
The native tissue bears the systemic load
Pressure changes down the road
Repair or replacement may be the code

[Chorus]
Neo-aortic valve, watch it well
Regurgitation time will tell
Mild today but years ahead
Structural changes we must dread
Monitor for life, that's what we do
The valve that once was truncal too

[Bridge]
Ten months stable, mild degree
But lifelong surveillance is the key
Years or decades down the line
Those abnormalities align
Intervention may be required
When the valve becomes too tired

[Verse 3]
From truncal origin to systemic gate
This valve's journey seals our patient's fate
The only outflow for the left side now
We watch and wait and wonder how
Long before we intervene somehow

[Chorus]
Neo-aortic valve, watch it well
Regurgitation time will tell
Mild today but years ahead
Structural changes we must dread
Monitor for life, that's what we do
The valve that once was truncal too

[Outro]
Single valve, systemic flow
Watch it closely as they grow
Truncus repaired but not the end
This valve's story will transcend

29. 1 Residual VSD Shunt

[Verse 1]
After truncus repair, the surgeon's done their part
But tiny gaps remain around the patching art
One to two millimeters, residual shunts we see
Through and around the edges, it's common as can be

[Chorus]
Small holes, stable flows
One point five or less, that's how success goes
Qp over Qs, the ratio we measure
Insignificant shunt, no cause for pressure
Time will heal, tissue grows
Over patch edges, the opening closes

[Verse 2]
This patient's case shows us the typical way
One to one point five millimeters, stable day by day
Every follow-up visit, the measurements stay the same
No intervention needed, it's part of healing's game

[Chorus]
Small holes, stable flows
One point five or less, that's how success goes
Qp over Qs, the ratio we measure
Insignificant shunt, no cause for pressure
Time will heal, tissue grows
Over patch edges, the opening closes

[Bridge]
When pulmonary flow to systemic flow
Stays below one point five to one ratio
The shunt won't cause problems for the heart
Natural healing plays its vital part

[Verse 3]
Tissue creeps across the synthetic material
Endothelial growth, the process is serial
What seems concerning to the untrained eye
Is just the heart's own way to heal and fortify

[Final Chorus]
Small holes, stable flows
One point five or less, that's how success goes
Qp over Qs, remember this measure
Insignificant shunt, no cause for pressure
Time will heal, nature knows
Over patch edges, the opening closes
Trust the process, let it be
Residual shunts are healing's key

30. 4 Pulmonary Artery Branch Stenosis

[Verse 1]
When truncus arteries get their repair
Pulmonary branches need special care
At anastomotic sites where surgeons connect
Stenosis can form from what you'd expect

[Verse 2]
Kinking and distortion change the flow
Progressive narrowing starts to show
Right PA branch with gradients that climb
Twenty to twenty-seven over time

[Chorus]
Branch stenosis, watch it grow
Twenty-seven to thirty-two we know
Anastomotic sites and kinking too
LPA ostial changes coming through
Balloon angioplasty, stenting's the way
When gradients rise day by day

[Verse 3]
Left pulmonary artery tells its tale
Mild stenosis making vessels pale
Ostial deformation at the start
Changes the pathway from the heart

[Verse 4]
Progressive nature of this condition
Requires careful monitoring and recognition
Gradients climbing from twenty baseline
Thirty-two millimeters mercury sign

[Chorus]
Branch stenosis, watch it grow
Twenty-seven to thirty-two we know
Anastomotic sites and kinking too
LPA ostial changes coming through
Balloon angioplasty, stenting's the way
When gradients rise day by day

[Bridge]
Future interventions we must plan
Balloon dilation when pressures expand
Stenting may be the final call
When stenosis threatens blood flow to all

[Verse 5]
Documentation shows the progression clear
From mild stenosis year after year
Both branches affected in their own way
Planning treatment for another day

[Chorus]
Branch stenosis, watch it grow
Twenty-seven to thirty-two we know
Anastomotic sites and kinking too
LPA ostial changes coming through
Balloon angioplasty, stenting's the way
When gradients rise day by day

[Outro]
Truncus repair brings complications new
Branch stenosis is one that we pursue
Monitor gradients and watch them climb
Intervention planned for the right time

31. 3 Aortic Root Dilation

[Verse 1]
When truncus arteriosus comes to play
The aortic root's enlarged right from day one
Seven point four one at the valve they say
Pre-op Z-scores show the dilation's begun
At sinus of Valsalva four point seven six
ST junction three point seven seven in the mix

[Chorus]
Z-scores over three to five
Mean dilation's alive
Root replacement on the line
When these numbers climb and climb
Truncal root is bigger born
Than normal hearts we've known before
Progressive growth means we must warn
Regurgitation's at the door

[Verse 2]
Three months post-op the valve drops down
One point eight eight shows improvement found
But sinus still at three point five three
ST junction holds at three point six nine, you see
The root remembers what it used to be
Inherently larger, that's the key

[Chorus]
Z-scores over three to five
Mean dilation's alive
Root replacement on the line
When these numbers climb and climb
Truncal root is bigger born
Than normal hearts we've known before
Progressive growth means we must warn
Regurgitation's at the door

[Bridge]
Seven months later what do we find
The valve jumps back to five point one two
Sinus at four three six, ST climbs too
Four point five five, progression's not kind
Watch for worsening regurgitation
Root replacement consideration

[Chorus]
Z-scores over three to five
Mean dilation's alive
Root replacement on the line
When these numbers climb and climb
Truncal root is bigger born
Than normal hearts we've known before
Progressive growth means we must warn
Regurgitation's at the door

[Outro]
Markedly elevated, that's the theme
Progressive dilation, part of the scheme
Monitor closely, plan ahead
When Z-scores rise, don't fill with dread
Root replacement saves the day
When dilation won't go away

32. 5 Ventricular Function Tracking

[Verse 1]
Truncus arteriosus, type two repair
Ventricular tracking shows the cardiac care
Seventy percent baseline, LV strong and true
RV function good, pre-operative view
Monitor the chambers through the journey ahead
Function tells the story, keeps the patient well-fed

[Chorus]
Track the numbers, watch them rise and fall
Seventy to fifty-eight, then climbing up the wall
LV EF tells us how the heart will mend
Robust function means a better end
Good, satisfactory, back to good again
Ventricular tracking is the surgeon's best friend

[Verse 2]
Post-op day seven, fifty-eight percent
Bypass depression, but it's not permanent
Expected decline from the surgical stress
RV satisfactory, but we're watching progress
Don't panic at the drop, it's part of the plan
Recovery takes time, we'll track what we can

[Chorus]
Track the numbers, watch them rise and fall
Seventy to fifty-eight, then climbing up the wall
LV EF tells us how the heart will mend
Robust function means a better end
Good, satisfactory, back to good again
Ventricular tracking is the surgeon's best friend

[Bridge]
Three months later, sixty-seven climbing high
RV back to good, see the function qualify
Seven months stable, sixty-eight holding strong
Even with conduit gradient, nothing's going wrong
Post-intervention, sixty-five and still maintained
Robust LV function, positive signs we've gained

[Verse 3]
Five time points mapped across the healing course
Tracking both ventricles, monitoring the force
Left side stays robust, a prognostic sign so bright
Right side follows suit, recovery in sight
From baseline through intervention, every beat we measure
Ventricular function is our clinical treasure

[Chorus]
Track the numbers, watch them rise and fall
Seventy to fifty-eight, then climbing up the wall
LV EF tells us how the heart will mend
Robust function means a better end
Good, satisfactory, back to good again
Ventricular tracking is the surgeon's best friend

[Outro]
Serial assessment guides the treatment plan
Truncus repair success measured span by span
Keep the function strong, track the cardiac flow
Ventricular monitoring helps the healing grow

33. 1 Spiral Course of PA Branches

[Verse 1]
When the truncal root refuses to divide
The pulmonary branches take a twisted ride
Left PA climbs up high, anterior and bright
Right PA drops below, posterior from sight

[Chorus]
It's a spiral dance, a twisted romance
LPA up front, RPA behind
From embryonic days when rotation went astray
This pattern you must always find
Left anterior superior, right posterior inferior
Document it every time

[Verse 2]
The undivided trunk just spins around
Creating geometry that's quite profound
What should be side by side now overlap
Making surgery a complex map

[Chorus]
It's a spiral dance, a twisted romance
LPA up front, RPA behind
From embryonic days when rotation went astray
This pattern you must always find
Left anterior superior, right posterior inferior
Document it every time

[Bridge]
Every echo, every cath, every CT scan you read
Mark the spiral course or surgical plans won't succeed
Anastomosis angles change when vessels cross this way
The catheter won't navigate if you don't know the play

[Verse 3]
Type Two truncus brings this gift so strange
Pulmonary arteries in spiral range
The interventional team needs to know
Which way these twisted vessels go

[Final Chorus]
It's a spiral dance, a twisted romance
LPA up front, RPA behind
From embryonic days when rotation went astray
This pattern you must always find
Left anterior superior, right posterior inferior
Document it every time

[Outro]
In truncus type two, remember what's true
The spiral course defines the view

34. 2 Nakata Index — Pulmonary Artery Adequacy

[Verse 1]
When truncus arteriosus needs repair
We measure pulmonary vessels with care
Take the radius of left PA squared
Times pi, then right PA prepared
Add them up and divide by BSA
That's Nakata's way to assess today

[Chorus]
Three hundred or above means adequate flow
One fifty to three hundred, borderline we know
Below one fifty means inadequate space
Nakata Index shows the PA case
Pi r squared for left and right
Divided by body surface, shining light

[Verse 2]
Pre-operative at three thirty-seven
Good surgical candidate, we're in heaven
But three months later, one thirty-seven
PA growth is lagging, that's the lesson
When the index falls despite the time
Right ventricle faces uphill climb

[Chorus]
Three hundred or above means adequate flow
One fifty to three hundred, borderline we know
Below one fifty means inadequate space
Nakata Index shows the PA case
Pi r squared for left and right
Divided by body surface, shining light

[Bridge]
Afterload rising when branches don't grow
Somatic growth outpaces what we need to know
Intervention time to help PAs expand
Promote the growth with surgical hand

[Chorus]
Three hundred or above means adequate flow
One fifty to three hundred, borderline we know
Below one fifty means inadequate space
Nakata Index shows the PA case
Pi r squared for left and right
Divided by body surface, guiding sight

[Outro]
When Nakata falls, we intervene
To help those pulmonary arteries grow between
The formula's simple, the message is clear
Adequate vessels keep the pathway near

35. 1 Infective Endocarditis Prophylaxis

[Verse 1]
When Truncus Type Two needs repair
Prosthetic conduits placed with care
But listen close, the story's not done
Infection risk has just begun
Lifelong vigilance is the key
Endocarditis won't let you be

[Chorus]
Prophylaxis for life, remember the rule
Dental procedures need antibiotic fuel
Gingival manipulation, don't take the chance
Give those bacteria no fighting stance
Cover infections, treat them fast
Make good hygiene habits last

[Verse 2]
Residual shunts still remain
Blood flow patterns cause some strain
Turbulent flow creates the space
Where bacteria love to find their place
On valve tissue they will grow
If we don't stop them, here's what we know

[Chorus]
Prophylaxis for life, remember the rule
Dental procedures need antibiotic fuel
Gingival manipulation, don't take the chance
Give those bacteria no fighting stance
Cover infections, treat them fast
Make good hygiene habits last

[Bridge]
Teach your patients what to see
Fever, fatigue, heart's missing beat
New murmurs or embolic signs
Don't wait around, don't waste time
Early treatment saves the day
Education lights the way

[Verse 3]
Brush and floss with daily care
Keep those gums healthy everywhere
Any infection needs coverage now
Antibiotics, make that vow
From skin to lungs to urinary tract
Bacterial seeding is a proven fact

[Chorus]
Prophylaxis for life, remember the rule
Dental procedures need antibiotic fuel
Gingival manipulation, don't take the chance
Give those bacteria no fighting stance
Cover infections, treat them fast
Make good hygiene habits last

[Outro]
Prosthetic conduits, shunts that stay
Need protection every day
Endocarditis prophylaxis wise
Keeps our Truncus patients' hearts alive

36. 2 Antiplatelet Therapy

[Verse 1]
When synthetic conduits bridge the heart
And patches seal the chambers tight
Five milligrams per kilogram starts
The aspirin protection every night
Prosthetic surfaces need defense
Against the clots that form within
Antiplatelet makes good sense
Let the circulation begin

[Chorus]
Five per kilo, day by day
Keeps the thrombus formation away
Synthetic surfaces need the guard
Aspirin protection for the heart
Lifelong therapy, that's the way
Unless we change the conduit someday

[Verse 2]
Truncus repair with conduits new
Creates a foreign surface zone
Platelets gather, that's what they do
Without protection they're not alone
They stick and clump and form a mass
Blocking flow where blood should go
Aspirin helps the circulation pass
Keeps the vital rivers in flow

[Chorus]
Five per kilo, day by day
Keeps the thrombus formation away
Synthetic surfaces need the guard
Aspirin protection for the heart
Lifelong therapy, that's the way
Unless we change the conduit someday

[Bridge]
When stents are placed inside the line
Dual therapy for a time
Two agents working side by side
Until the healing is our guide
But when conduits get replaced
Reassess the therapy placed

[Verse 3]
Generally lifelong is the rule
For conduits that bridge the gap
Each replacement calls for retool
Evaluate the therapy map
The synthetic materials stay
Foreign to the body's eye
So antiplatelet paves the way
For circulation flowing by

[Final Chorus]
Five per kilo, day by day
Keeps the thrombus formation away
Synthetic surfaces need the guard
Aspirin protection for the heart
Lifelong therapy, that's the way
Reassess each replacement day

[Outro]
Antiplatelet therapy
Protects the heart's geometry

37. 3 Serial Surveillance Schedule

[Verse 1]
After the repair when the conduit's in place
Serial surveillance sets our monitoring pace
First two years are critical, every three to six months we see
Echo shows the gradient, valve function running free
PA growth is vital, ventricular state
Don't wait too long, don't be late

[Chorus]
Three to six then annually
Echo keeps us safe you see
Cath when indicated, MRI at five
Holter every year to keep the rhythm alive
Exercise when ready, function we must test
Serial surveillance gives our patients the best

[Verse 2]
Annual echo after age two begins
Ongoing surveillance as the journey continues
Catheterization when the case demands
Hemodynamics measured by expert hands
Interventions possible through the catheter way
Watching for the signs day by day

[Chorus]
Three to six then annually
Echo keeps us safe you see
Cath when indicated, MRI at five
Holter every year to keep the rhythm alive
Exercise when ready, function we must test
Serial surveillance gives our patients the best

[Bridge]
Age five brings MRI when feasible to do
RV volumetrics and regurgitation too
Quantify the conduit, see what's flowing through
Ventriculotomy scar can cause arrhythmic breakthrough
Holter monitoring yearly catches what we fear
Exercise testing shows if function's crystal clear

[Verse 3]
Age appropriate testing as the child grows strong
Functional capacity measured all along
Arrhythmia screening in the exercise lab
The scar tissue's dangerous, we keep close tabs
Every modality serves its special role
Comprehensive care is always our goal

[Chorus]
Three to six then annually
Echo keeps us safe you see
Cath when indicated, MRI at five
Holter every year to keep the rhythm alive
Exercise when ready, function we must test
Serial surveillance gives our patients the best

[Outro]
From infancy to adult years
Our schedule keeps away the fears
Type Two truncus needs this plan
Serial surveillance, understand

38. 4 Expected Reinterventions Over a Lifetime

[Verse 1]
From childhood through the years ahead
Four main reinterventions lie
The conduit needs replacing when
The pathway starts to narrow tight
Three to five times in a lifetime
First one often by age five
Keep the blood flowing to the lungs
Keep the patient's hope alive

[Chorus]
Replace, repair, and intervene
Four pathways we must oversee
Conduits, vessels, valves, and more
Through the decades we'll restore
Replace, repair, and intervene
Truncus care's our strategy
From infant years to adult life
We'll guide them through each surgical knife

[Verse 2]
Pulmonary arteries may need
Angioplasty or a stent
When branches narrow down too much
And oxygen flow gets bent
Percutaneous valves can help
When anatomy's just right
May delay one surgery
Keep the future looking bright

[Chorus]
Replace, repair, and intervene
Four pathways we must oversee
Conduits, vessels, valves, and more
Through the decades we'll restore
Replace, repair, and intervene
Truncus care's our strategy
From infant years to adult life
We'll guide them through each surgical knife

[Verse 3]
Aortic valve regurgitation
Might progress as years go by
Root dilation needs attention
When the measurements climb too high
Residual VSD closure
Rarely needed but we watch
Pacemakers for arrhythmias
When the rhythm needs a notch

[Bridge]
When ventricular function fails
And nothing else will do
Transplantation waits as last resort
To make their heart like new
Through decades of interventions
We plan each careful move
Four main types of reinterventions
Keep their circulation smooth

[Chorus]
Replace, repair, and intervene
Four pathways we must oversee
Conduits, vessels, valves, and more
Through the decades we'll restore
Replace, repair, and intervene
Truncus care's our strategy
From infant years to adult life
We'll guide them through each surgical knife

[Outro]
Four expected interventions
Through a lifetime we will see
Conduit, vessel, valve, and rhythm
Truncus care's complexity

39. 2 The Leadership Commitment

[Verse 1]
Leadership's not a title on your door
It's not a corner office or much more
It's showing up each day with open heart
Being intentional right from the start
The world needs people willing to do the work
Not just collect the perks or try to shirk

[Chorus]
Commit to lead, commit to grow
Be the change that helps others glow
Daily practice, not a place to be
Leadership lives in you and me
Commit to lead, commit to serve
Find the greatness that's there preserved

[Verse 2]
Every morning brings a choice to make
Will you lead for others' sake
With integrity, courage, and care
Show the world that you'll be there
It's not about putting greatness in
It's drawing out what lies within

[Chorus]
Commit to lead, commit to grow
Be the change that helps others glow
Daily practice, not a place to be
Leadership lives in you and me
Commit to lead, commit to serve
Find the greatness that's there preserved

[Bridge]
Who are you becoming today
What kind of leader will you be
The greatness is already there they say
Just waiting to be set free
Your journey starts with one decision
To lead with purpose and precision

[Verse 3]
Wherever you are, wherever you stand
You can offer a helping hand
Leadership flows from heart to heart
Every ending's a brand new start
The commitment that you make today
Will light someone else's way

[Chorus]
Commit to lead, commit to grow
Be the change that helps others glow
Daily practice, not a place to be
Leadership lives in you and me
Commit to lead, commit to serve
Find the greatness that's there preserved

[Outro]
Be intentional about who you're becoming
Leadership commitment keeps on humming
Not a destination, but a daily way
Choose to lead someone today

40. 4 The Practice of Reflection

[Verse 1]
Sarah led her team through a project that failed
Deadlines missed and morale derailed
But instead of moving on too fast
She stopped to learn from what had passed
Sat down with her journal that night
Asked herself what went wrong, what went right

[Chorus]
Reflect, review, and learn each day
What happened, what you'd change along the way
Look back to move forward strong
Great leaders know reflection's never wrong
Review, reflect, and grow
That's how the best leaders always go

[Verse 2]
Marcus takes a walk every evening
Thinks about his team and their feelings
What decisions worked, which ones fell flat
Which conversations need a follow-up chat
No phone, no rush, just quiet time
To sort through thoughts and realign

[Chorus]
Reflect, review, and learn each day
What happened, what you'd change along the way
Look back to move forward strong
Great leaders know reflection's never wrong
Review, reflect, and grow
That's how the best leaders always go

[Bridge]
Journal writing, trusted talks
Quiet moments, thoughtful walks
After-action team reviews
Every method that you choose
Builds wisdom from experience
Makes your leadership more clear and confident

[Verse 3]
Elena gathers her team each Friday
What went well, what blocked our highway
Everyone shares lessons learned
Bridges built and bridges burned
This reflection time they treasure
Helps them grow beyond all measure

[Chorus]
Reflect, review, and learn each day
What happened, what you'd change along the way
Look back to move forward strong
Great leaders know reflection's never wrong
Review, reflect, and grow
That's how the best leaders always go

[Outro]
Make reflection your routine
Learn from every challenge seen
Yesterday's lessons light tomorrow's way
Reflect, review, and learn each day

41. 1 Echocardiographic Trends

[Verse 1]
Post-op echo shows the start of healing
Fifty-eight percent, the left heart's dealing
Conduit pressure thirty at the peak
Minimal leak, the future looks so sweet
Aortic valve at five, descending eight
VSD one-point-five, we'll monitor and wait

[Chorus]
Watch the trends through time and space
Stable hearts stay in their place
But when gradients start to climb
Intervention's paradigm
LV strong, conduit's the key
Echo tells us what we'll see

[Verse 2]
Three months later, function's getting better
Sixty-seven percent, following the letter
Conduit pressure creeping up to thirty-two
RPA gradient's twenty-seven too
Aortic regurg holding mild and steady
For the next checkup, we'll be ready

[Chorus]
Watch the trends through time and space
Stable hearts stay in their place
But when gradients start to climb
Intervention's paradigm
LV strong, conduit's the key
Echo tells us what we'll see

[Bridge]
Seven months brings warning signs
Sixty-seven peak's crossed the line
Mean of thirty-seven's high
Time for BPV, we'll try
RPA's thirty-two and rising
Careful monitoring's advising

[Verse 3]
Post-balloon, the numbers settle down
Forty-eight peak, wearing intervention's crown
But regurgitation's moderate now
Sixty-five percent EF shows us how
The heart adapts through surgical repair
Long-term follow-up requires constant care

[Chorus]
Watch the trends through time and space
Stable hearts stay in their place
But when gradients start to climb
Intervention's paradigm
LV strong, conduit's the key
Echo tells us what we'll see

[Outro]
Truncus type two needs lifelong tracking
When the conduit starts cracking
Echo trends will guide our way
For another fighting day

42. 5 Quality of Life

[Verse 1]
After surgery the journey's just begun
Most survivors live their lives with hearts that run
Active days ahead with careful monitoring
Quality of life through proper doctoring
But some restrictions help you stay on track
Moderate exercise keeps your heart intact

[Chorus]
Five pillars standing strong for life ahead
Active living, exercise with care instead
Neuro follow-up, psychosocial support
ACHD transition - make that switch report
Quality of life with truncus type two
Five pillars guide you in all that you do

[Verse 2]
Recreational sports are generally fine
But competitive athletics cross the line
Your heart needs limits though your spirit's free
Moderate activities are the key
Swimming, walking, cycling at your pace
Listen to your body, find your space

[Chorus]
Five pillars standing strong for life ahead
Active living, exercise with care instead
Neuro follow-up, psychosocial support
ACHD transition - make that switch report
Quality of life with truncus type two
Five pillars guide you in all that you do

[Verse 3]
Twenty-two q eleven point two deletion
Means your brain needs extra attention
Neurodevelopmental checks along the way
Learning differences may come to stay
Early intervention helps you succeed
Following up on every special need

[Verse 4]
Living with a chronic heart condition
Needs emotional support and recognition
Psychosocial help throughout your years
Managing the stress, addressing fears
Family support and counseling too
Mental health matters as much as you do

[Chorus]
Five pillars standing strong for life ahead
Active living, exercise with care instead
Neuro follow-up, psychosocial support
ACHD transition - make that switch report
Quality of life with truncus type two
Five pillars guide you in all that you do

[Bridge]
Adolescence brings a crucial change
Adult congenital care arrange
Pediatric days are left behind
ACHD specialists you'll find
Transition planning starts today
Preparation paves the way

[Outro]
Five pillars strong, your life foundation
Active monitoring across the nation
Exercise wisdom, neuro care
Psychosocial support always there
ACHD transition when you're grown
Quality of life you've always known

43. 6 Future Pregnancy Counseling

[Verse 1]
When truncus repair meets family dreams
Pre-conception talk's not as simple as it seems
Moderate to high risk carries the day
MFM and cardiology light the way
Before the heart beats twice inside
Expert guidance stands beside

[Chorus]
Counsel before, assess the core
Residual burden tells us more
MFM ACHD hand in hand
Genetic risks we understand
Twenty-two-q-eleven-two
Fifty percent could pass right through

[Verse 2]
Residual lesions set the stage
Risk assessment guides each page
Outflow gradients, valve regurg
These are factors that emerge
Pulmonary pressure, function too
Every detail matters through

[Chorus]
Counsel before, assess the core
Residual burden tells us more
MFM ACHD hand in hand
Genetic risks we understand
Twenty-two-q-eleven-two
Fifty percent could pass right through

[Bridge]
Deletion screening tells the tale
If positive, risks will not fail
Autosomal dominant way
Half the children bear the day
Counseling saves the surprise
Knowledge opens up their eyes

[Verse 3]
Maternal function leads the call
Echo, stress test, check it all
Right heart cath if pressure's high
Pregnancy needs reasons why
Team approach from start to end
On this care we can depend

[Final Chorus]
Counsel before, assess the core
Residual burden tells us more
MFM ACHD hand in hand
Genetic risks we understand
Twenty-two-q-eleven-two
Fifty percent could pass right through
Future pregnancy well planned
With expert care close at hand

[Outro]
When repair meets reproduction's call
Pre-conception counseling conquers all

44. Textbooks

[Verse 1]
From the embryonic heart, conotruncal forms arise
When the spiral septum fails, truncus arteriosus lies
Single vessel leaves the heart, overriding both ventricles
Moss and Adams guide us through the pathophysiology

[Chorus]
Truncus Type Two, remember the clue
Aortic arch interrupted, systemic flow is blue
RV to PA conduit is the surgical way
Kirklin-Barratt-Boyes shows us the operative day
One vessel becomes two, that's what we must do
Truncus Type Two

[Verse 2]
Anderson's text reveals the embryology clear
Neural crest cell migration problems brought us here
Conotruncal ridges failed to spiral and divide
Left a common arterial trunk where two should reside

[Chorus]
Truncus Type Two, remember the clue
Aortic arch interrupted, systemic flow is blue
RV to PA conduit is the surgical way
Kirklin-Barratt-Boyes shows us the operative day
One vessel becomes two, that's what we must do
Truncus Type Two

[Bridge]
From the right ventricle, build a pathway new
Valved conduit to pulmonary, that's the surgeon's view
Close the VSD completely, separate the flow
Systemic and pulmonary circuits both can grow

[Verse 3]
Timing matters in repair, don't wait too long
Pulmonary vascular disease makes outcomes wrong
Early complete repair before the vessels change
Morphology and function we must rearrange

[Chorus]
Truncus Type Two, remember the clue
Aortic arch interrupted, systemic flow is blue
RV to PA conduit is the surgical way
Kirklin-Barratt-Boyes shows us the operative day
One vessel becomes two, that's what we must do
Truncus Type Two

[Outro]
Three textbooks guide our knowledge base
Embryology, morphology, surgical grace
From single trunk to dual circulation
Complete repair brings restoration

45. Guidelines

[Verse 1]
When truncus type two comes to view
Adult patients need guidelines true
AHA ACC in twenty-eighteen
Set the standards for care routine
Surgical history matters most
Follow-up is what we boast
Cardiology teams must align
For outcomes that truly shine

[Chorus]
A-H-A says assess and plan
E-S-C keeps the protocol span
Endocarditis prophylaxis care
Guidelines guide us everywhere
Check the function, watch the flow
Prevention steps we need to know
Standards set the healing way
Follow guidelines every day

[Verse 2]
European guidelines twenty-twenty
ESC wisdom gives us plenty
Grown-up congenital hearts need more
Lifelong management at the core
Imaging studies year by year
Arrhythmia risks we monitor here
Exercise testing shows the truth
Preserving function from the youth

[Chorus]
A-H-A says assess and plan
E-S-C keeps the protocol span
Endocarditis prophylaxis care
Guidelines guide us everywhere
Check the function, watch the flow
Prevention steps we need to know
Standards set the healing way
Follow guidelines every day

[Bridge]
Scientific statement makes it clear
Infection risk we always fear
Dental procedures need protection
Antibiotic pre-selection
High-risk patients get the shield
Better outcomes they will yield

[Verse 3]
Pregnancy counseling takes its place
Genetic screening face to face
Multidisciplinary teams unite
Keeping patients in the light
Quality measures track success
Evidence-based care, nothing less
From infant days to adult years
Guidelines calm our clinical fears

[Chorus]
A-H-A says assess and plan
E-S-C keeps the protocol span
Endocarditis prophylaxis care
Guidelines guide us everywhere
Check the function, watch the flow
Prevention steps we need to know
Standards set the healing way
Follow guidelines every day

[Outro]
When truncus calls for expert care
Guidelines show us how to dare
Standards lead to better days
Following the proven ways

46. 2 Growth and PA Sizing

[Verse 1]
At six weeks old, the story starts to show
Fifty-six centimeters, four point five three kilos
BSA of point two seven, pulmonary arteries seven six
Nakata index strong at three three seven, pre-op metrics

[Chorus]
Watch the growth, track the size
Pulmonary arteries before your eyes
BSA climbing, Nakata falling
PA sizing tells the story calling
From pre-op to follow-through
Growth and sizing guide what we do

[Verse 2]
Three months later, weight has climbed to six
Fifty-seven centimeters, BSA point three two fix
But the PA diameters dropped to five and five point five
Nakata plummets to one thirty-seven, stenosis comes alive

[Chorus]
Watch the growth, track the size
Pulmonary arteries before your eyes
BSA climbing, Nakata falling
PA sizing tells the story calling
From pre-op to follow-through
Growth and sizing guide what we do

[Bridge]
Seven months brings the final frame
Seventy-eight centimeters, eight point five the weight game
Left PA five point three at bifurcation site
Seven millimeters distally, but right PA out of sight

[Verse 3]
BSA reaches point four three so high
But pulmonary growth can't keep the pace and fly
Nakata index tells the stenotic tale
When PA growth behind the body growth does fail

[Chorus]
Watch the growth, track the size
Pulmonary arteries before your eyes
BSA climbing, Nakata falling
PA sizing tells the story calling
From pre-op to follow-through
Growth and sizing guide what we do

[Outro]
Growth curves teach us intervention time
PA stenosis shown in metric rhyme
Truncus repair needs adequate flow
Growth and sizing help us know

47. 3 Laboratory Baseline

[Verse 1]
In the cardiac unit, charts in hand
Truncus arteriosus, we understand
Post-operative numbers tell the tale
Hemoglobin drops from one-fifty scale
Down to one-twenty after the repair
Hematocrit follows, drops with care
From fifty-three percent to thirty-eight
Blood work changes we anticipate

[Chorus]
One-fifty down to one-twenty, hemoglobin's fall
Fifty-three to thirty-eight, hematocrit call
Nine point three to six point three, white cells decline
Two-oh-six to two-seventy-six, platelets climb the line
Post-op changes, BPV stages
Laboratory pages tell the story of healing phases

[Verse 2]
White blood cells start at nine point three
Times ten to the ninth, that's what we see
After balloon pulmonary valve
Six point three is what we solve
The count goes down as healing starts
Normal response in mending hearts
Platelets rise from two-oh-six
To two-seventy-six, the body's fix

[Chorus]
One-fifty down to one-twenty, hemoglobin's fall
Fifty-three to thirty-eight, hematocrit call
Nine point three to six point three, white cells decline
Two-oh-six to two-seventy-six, platelets climb the line
Post-op changes, BPV stages
Laboratory pages tell the story of healing phases

[Bridge]
Blood type O with Rhesus positive
Infectious screening stays negative
From post-op through to BPV
Clean results consistently
These baselines guide our treatment plan
Help us understand how healing spans

[Chorus]
One-fifty down to one-twenty, hemoglobin's fall
Fifty-three to thirty-eight, hematocrit call
Nine point three to six point three, white cells decline
Two-oh-six to two-seventy-six, platelets climb the line
Post-op changes, BPV stages
Laboratory pages tell the story of healing phases

[Outro]
Remember these numbers, know them well
Laboratory values have stories to tell
In truncus arteriosus care
These baselines show what to prepare

48. Further Study Topics

[Verse 1]
Twenty-two q eleven dot two deletion here
DiGeorge syndrome makes the picture crystal clear
Cardiac defects cluster in this genetic tale
Truncus arteriosus when chromosomes fail
Conotruncal anomalies rise up from the start
When neural crest migration tears the developing heart

[Chorus]
Further studies guide the way
PVR assessment day by day
Homograft versus synthetic choice
Transition care needs every voice
Ross procedure, valve replace
Adult congenital's changing face

[Verse 2]
Pulmonary vascular resistance tells the story true
Catheterization data shows us what to do
Wood units climbing as the pressures rise too high
Operability windows slowly say goodbye
Vasoreactivity testing with the oxygen mask
Reversibility questions that we have to ask

[Chorus]
Further studies guide the way
PVR assessment day by day
Homograft versus synthetic choice
Transition care needs every voice
Ross procedure, valve replace
Adult congenital's changing face

[Verse 3]
Homografts bring biology but calcify with time
Synthetic conduits last longer in their prime
Melody valves and Contegra weigh the risks
Percutaneous replacement when the gradient skips
Twenty millimeter mercury across the valve
New technology helps the problems that we solve

[Bridge]
Neurodevelopment suffers when the surgery's young
Bypass time and cooling leave the circuits unstrung
Executive function, learning deficits appear
Multidisciplinary support throughout the years

[Verse 4]
Transition of care from pediatric teams
Adult congenital specialists fulfill the dreams
Structured programs bridge the gap from child to grown
Medical homes ensure they're never left alone
Ross procedure moves the valve from right to left
Aortic root replacement when the tissue's bereft

[Chorus]
Further studies guide the way
PVR assessment day by day
Homograft versus synthetic choice
Transition care needs every voice
Ross procedure, valve replace
Adult congenital's changing face

[Outro]
Twenty-two q deletion through the lifespan long
Further study topics make our knowledge strong

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Truncus Arteriosus: Cardiac Pathology and Surgery | 93