In all cases intensity of murmur increases on sit-up and hand grip except?
Correct Answer: HOCM
Description: On standing: The venous return is going be reduced & there is decrease blood coming to the hea, therefore intensity of murmurs get reduced. Eg : Valsalva, Amyl nitrate (Except HOCM: louder murmur; MVP: longer murmur) Note: All murmurs increase on doing sit ups, hand grip as there is increase of peripheral resistance HOCM: soften MVP: shoer HOCM: AD defect in chromosome 14, b- myosin gene disorder
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