This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Commonest cause of hea failure in infancy is - 
Select and explain. 
A. Myocarditis, B. Rheumatic fever, C. Cardiomyopathy, D. Congenital hea disease
D: Congenital hea disease
Answer: D: Congenital hea disease 
Explanation: Ans. is 'd' i.e., Congenital hea disease Congestive hea failure o Congestive hea failure is state in which the hea cannot produce the cardiac out required to sustain the metabolic needs of the body, without evoking ceain compensatory mechanism. o The most common cause of CHF in infants --> Congenital hea disease. o The most common cause of CHF in the older children --> Rheumatic fever & rheumatic hea disease.