[Verse 1] Pi times radius squared for left and right Add both branches, divide by surface height Body surface area tells the tale Nakata's formula never fails Three thirty-seven pre-op looking strong Good surgical candidate, nothing wrong [Chorus] Three hundred normal, one fifty's the floor Borderline dancing in between the score Pi r squared times two divided clean By BSA, the sharpest screening machine Nakata index, pulmonary gauge Arterial adequacy takes center stage [Verse 2] Post-op numbers tell a different story One thirty-seven, diminished glory Growth not matching what the body needs Somatic surge while the artery bleeds Right ventricle fighting elevated load PA intervention breaks the code [Chorus] Three hundred normal, one fifty's the floor Borderline dancing in between the score Pi r squared times two divided clean By BSA, the sharpest screening machine Nakata index, pulmonary gauge Arterial adequacy takes center stage [Bridge] Falling numbers scream a warning Branch growth lagging every morning Afterload climbing, pressure mounting Every millimeter we're counting LPA plus RPA combined Surgical destiny defined [Verse 3] Truncus repair demands precision math Calculate the optimal vascular path Months post-surgery, measure again Track the growth through surgeon's pen Inadequate branches need intervention PA promotion, smart prevention [Outro] Pi r squared, don't forget the sum BSA dividing, calculations done Nakata's wisdom guides the healing art Pulmonary flow, the beating heart
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