Pediatrics C.V.S 9b7cceee Commonest cause of hea failure in infancy is ________ A Myocarditis B Rheumatic fever C Cardiomyopathy D Congenital hea disease High-Yield Explanation Most common cause of congestive cardiac failure in infants is congenital hea disease. Ref : Ghai essential of pediatrics, eighth edition ,p.no:397