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NBME 23 Answers

nbme23/Block 4/Question#17

A 24-year-old man has a grade 3/6 systolic murmur. ...

Aortic stenosis

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submitted by jrod77(21),

The systolic pressure difference between the left ventricle and the aorta in this pt. is pretty significant, Whereas in a normal heart those systolic pressures should be just about equal. This hints at the fact that the left ventricle has to put in alot of work to push through the aortic valve. That extra pressure goes into opening the valve and does not appear in the aorta.

divya  why is left atrial pressure normal while pulm arterial and right ventricular pressures are high? +