A 16 year old male is referred by high school coach for a physical examination before joining the football team. His elder brother had died suddenly during football practise, no autopsy was done. The patient has a loud systolic murmur on chest auscultation. All of the following would be constant with hyperophic cardiomyopathy, except-
Ref: Harrison's 19th E pg 1568 Murmur of HOCM doesn't radiate to neck. Hyperophic cardiomyopathy is defined as left ventricular hyperophy that develops in the absence of causative hemodynamic factors, such as hypeension, aoic valve disease, or systemic infiltrative or storage diseases
A crescendo-decrescendo systolic murmur
Murmur radiating to neck
Brisk carotid upstroke
Increase in murmur during valsalva or standing
C.V.S