<prompt> All are true about hyperophic obstructive cardiomypathy except-Asymmeric hyperophy of septumSystolic motion of anterior leafletLeft ventricle outflow obstructionBeta blockers are not effective  <response>: Ref:Harrison;s 19th E pg 1568. Beta-blockers are the drug of choice for HOCM. Decreasing the contractility of hea prevents the hyperophied septum coming in contact with the anterior leaflet of the mitral Valve. Hence reducing the obstruction. 