Lub-Dub

Verse 1 Four chambers, one relentless grind, No days off, no peace of mind. Sitting left in the mediastinum, Myocardium built on spite and calcium. Pre-Chorus Fist-sized pump, underpaid star, Keeps you alive while you’re stressed at the bar. Chorus 🎶 Lub–DUB! S1, S2, AV valves snapping like they’ve had enough of you. Mitral, tricuspid—close that door, Semilunars say “exit through the floor.” Verse 2 Right atrium, venous blood, Low O₂ and bad decisions flood. Through tricuspid, right ventricle rage, Pulmonary artery—lungs, take the stage. Chorus 🎶 Lub–DUB! Pulmonary valve, Gas exchange doing free labor itself. Dump the CO₂, grab O₂, Alveoli working harder than you. Verse 3 Left atrium gets the oxygenated tea, Pulmonary veins deliver politely. Mitral opens, left ventricle thick, Pumping systemic pressure like “I lift, don’t skip.” Bridge (Pathophysiology Check) Left ventricle hypertrophy? Think chronic load. Aortic stenosis—pressure overload. Backflow murmur? Valve didn’t seal. If it’s loud enough… that’s not ideal. Final Chorus 🎶 Lub–DUB! Septum holds the line, No mixing blood on my watch, fine? Coronaries feed the beast, Ischemia hits when they take a lease. Outro (Night-Shift Edition) SA node sets pace—natural boss. AV node delays like admin calls. Bundle branches, Purkinje fire, ECG tracing says “still not expired.” Last Line Protect your heart, reduce the strain… Because it will beat through all your poor life choices— Including that third energy drink. 🫠🩺