[Verse 1] Fifties into sixties, overcirculation's flood Surgeons reached for banding, tightening the blood But truncus wouldn't listen — type II split the road Two branches, two arteries, one band could not hold [Chorus] Del banding al bypass, corazón que aprende Historia nos enseña cómo el cirujano mends One trunk, two futures, homograft and hope entwined Sigue latiendo — keep the story in your mind [Verse 2] Nineteen sixty-two, Behrendt dared to try Cardiopulmonary bypass just learning how to fly Early hands on truncus, the pump still finding ground Repair was just a whisper, not yet a steady sound [Verse 3] Sixty-seven, Rastelli sketched a valve inside a tube A conduit, right ventricle to lung, a channel freshly hewed McGoon and Ongley, Mayo Clinic, sixty-eight Aortic homograft sewn in — the turning point, the gate Ross and Barratt-Boyes were rising, homografts became the creed Valved against the valveless, a debate began to seed [Chorus] Del banding al bypass, corazón que aprende Historia nos enseña cómo el cirujano mends One trunk, two futures, homograft and hope entwined Sigue latiendo — keep the story in your mind [Verse 4] Ebert, out in San Francisco, nineteen eighty-four Infants under six months, kicked open the door No more stalling, no more banding, buying desperate time Early repair proved braver — the little ones could climb [Bridge] Hanley and Bove refined it, neonates upon the table now Barbero-Marcial, ninety, grew a conduit-free bough Bonhoeffer, two-thousand, slipped a valve through catheter's thread Follow-up transformed forever, no more opening the chest instead Where the clinics thin and truncus comes in late and underseen Surgeons still rewrite the story — courage fills the in-between [Verse 5] Homograft, then the xenograft — Hancock, Contegra sewn Dacron and Gore-Tex, synthetic corridors we've grown But calcium finds its canvas, efflorescence blooms like frost, That chalky bloom of failure taught us what the tissue cost [Verse 6] Fetal echoes catching truncus long before the birth Genetics whisper twenty-two q, deletion's hidden worth DiGeorge shadows every conduit, every graft we place Team of surgeon, geneticist, cardiologist embrace Registries now span the decades, outcomes charted, lessons kept Every reoperation teaches what the pioneers had swept Into footnotes, into data, into hands that operate today Truncus arteriosus still is teaching — still will teach the way [Chorus] Del banding al bypass, corazón que aprende Historia nos enseña cómo el cirujano mends One trunk, two futures, homograft and hope entwined Sigue latiendo — keep the story, keep the mind [Outro] Band it, mend it, grow it, free it — watch the timeline turn Cada válvula cuenta historias — this is how we learn From Rastelli's sketch to catheters threading through the vein Un corazón, dos caminos — the lesson stays the same
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