[Verse 1] (Male) The truncal valve leaks, three leaflets gone unruly, Resuspend the flaps or carve them into two, cool and duly— (Female) Bicuspidize the tissue, buy the ventricle some time, But when the cusps are ravaged, swap it out — no leaflet left to climb. (Male) Repair when there is tissue with a fighting chance to hold, (Female) Replace when regurgitation's story's already told. [Chorus] Truncus, truncus, one root wearing two disguises, Watch the gradient rising while the pulmonary bed compromises. Conduit's a candle, burning short from the very start, Resuspend, replace, reintervene — that's the surgeon's art. Neo-aorta, never sleeping, watch it all your days, Type Two truncus teaches patience pays. [Verse 2] (Female) Type Two meets interrupted arch — the aorta severed, torn, (Male) One pump session, single stage, before the newborn's worn. (Female) Reconstruct the gap in one long breath, don't stagger the attack, Overlap with A-Four's lesson — mend the arch and root, don't look back. (Male) The window's narrow, the tissue's fragile, the stakes are sky-high steep, (Female) One-stage repair, or risk a second surgery you can't keep. [Verse 3] (Male) Now the RV-to-PA conduit — it's a promise built to break, Homograft, xenograft, whichever — stenosis is the fate it'll make. (Female) Echo tracks the gradient climbing, quarter by quarter, year by year, Right ventricular pressure whispers when it's time to interfere. (Male) Peak gradient, RV pressure creeping past the systemic line, (Female) That's the threshold — that's the signal — intervention time. [Chorus] Truncus, truncus, one root wearing two disguises, Watch the gradient rising while the pulmonary bed compromises. Conduit's a candle, burning short from the very start, Resuspend, replace, reintervene — that's the surgeon's art. Neo-aorta, never sleeping, watch it all your days, Type Two truncus teaches patience pays. [Verse 4] (Female) Balloon the conduit, stretch the scar, or drop a stent inside, (Male) Melody or Sapien valve, transcatheter, no need to open wide. (Female) Watch the branches, left and right, where they were sewn back on— Ostial stenosis lurks right where the reimplant's drawn. (Male) Catheter first, before the knife — the modern order of the day, (Female) But surgery still waits its turn when catheters can't clear the way. [Bridge] (Male) Redo, redo, serial replacement, each conduit a little bigger, (Female) Enlargement strategies stretching runway for a growing figure. (Both) Ninety percent survival now in centers built for this fight, Most will meet the pulmonary pathway's needle before they reach their rite— (Male) Adulthood arrives with scars still open, still being read, (Female) The neo-aortic root demands its watch till life's last thread.
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