The 9 month old child of a diabetic mother presents with tachypnea and hepatomegaly. Echo cardloKraphy of the hea showed normal cardiac morphology with asymmetric septal hyperophy. Which of the following you will give to treat this child -

Ref:Harrison&;s 19th E pg 1568 It is most commonly a case of HOCM. Drugs that reduce the contractility (Beta-blockers) are the drug of choice. They decrease the contractility of hea, and prevents the hyperophied septum in coming in close proximity with the anterior leaflet of the mitral Valve.