All except one is true regarding murmur heard in hypertrophic obstructive  cardiomyopathy: (A) Systolic murmur decreases on squatting, (B) Systolic  murmur increases on valsalva manoeuvre, (C) Systolic murmur increases with hand grip, (D) Systolic murmur decreases on taking beta blocker
Answer is C. Murmur in HOCM decreases with handgrip
DYNAMIC CARDIAC ASCULTATION
Effect of Murmurs.