Classically in mitral valve prolapse, the clinician can hear a(n) ____
A. Mid-systolic click followed by a grade I murmur that crescendos up to S2
B. Opening snap followed by a grade III holosystolic murmur
C. Crescendo-decrescendo grade I diastolic murmur after S2
D. Rough grade III holosystolic murmur that obscures S1 and S2
ANS: A
In mitral valve prolapse (MVP), a portion of the mitral valve flops open up into the left atrium, giving rise to a classic mid-systolic click followed by a soft grade I murmur that crescendos up to S2. It is high pitched and is heard best at the apex or left sternal border.
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