phuluong2k
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A high school basketball player passes out in the middle of a
game. He is rushed to the emergency room, where he regains consciousness.
He claims that just before he fainted, he had difficulty breathing and
experienced palpitations. On physical exam, he has a bifid apical impulse
and a coarse systolic murmur at the left sternal border. The echocardiogram
reveals ventricular hypertrophy with asymmetric septal thickening. Which
of the following would increase the intensity of his heart murmur?
A. Elevating his legs
B. Increasing sympathetic tone
C. Performing the Valsalva maneuver
D. Squatting
plz give explanation
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| anatomy
Forum Guru
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C. Performing the Valsalva maneuver?
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| phuluong2k
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Genius 
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| Alina T
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yes, because valsalva is the only one which decrease the volume of blood in the heart, hence decreasing the volume of LV. all the others increase heart size by the greater volume of blood, keeping the hypertrophied septum farther from the LV walls, this way making easier for the blood to get out and lessening the murmur.
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| Moctopod
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Nice explanation. Thanks!
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| ssrpk
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really kool explanation AlinaT 8) 
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