[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