Heart Sounds S1 -

Elara laughed. “Yes. A good, firm door slam.” Later that night, alone in the on-call room, Elara pressed her own stethoscope to her chest.

But before they could push that blood to the lungs and the body, they had to close the doors behind them. Those doors were the mitral and tricuspid valves. heart sounds s1

Not the DUB. That’s just the closing of the aortic and pulmonic valves—the end of the push. Elara laughed