Author Question: Aortic regurgitation occurs after S2 during ____ because there is turbulent flow that refluxes into ... (Read 68 times)

lindiwe · **on:** Jun 25, 2018

Aortic regurgitation occurs after S2 during ____ because there is turbulent flow that refluxes into the left ventricle after the aortic valve closes.

A. Early diastole
B. Late diastole
C. Early systole
D. Mid-systole

Question 2

In mitral stenosis, the murmur can be best heard with the patient in the:

A. Squatting position
B. Seated position
C. Left lateral recumbent
D. Supine position

tjayeee · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

ANS: A
The aortic valve closes creating S2. After the aortic valve closes, in aortic regurgitation, some blood flows back into the left ventricle. S1 through S2 is the systolic time frame. S2 through S1 is the diastolic time frame. The sound of a leaky aortic valve would be heard after the aortic valve closes (S2) during early diastole.

Answer to Question 2

ANS: C
Mitral stenosis results from thickening and stiffening of the mitral valve, usually secondary to rheumatic fever. The murmur is generally grade I to IV and low pitched; therefore, it is heard better with the bell at the apex in the left lateral recumbent position. The first heart sound (S1) is loud, followed by S2 and a loud opening snap that precedes the murmur.