Most common cause of hea block in infants is
Correct Answer: Surgery for congentital hea disease
Description: Ans. is 'b' i.e., Surgery for congentital hea disease In children, the most common cause of permanent acquired complete AV block is surgery for congenital hea disease. Postsurgical completer atrioventricular block (A VB) is the most common cause for acquired AV block in children, resulting from trauma to the AV node at time of surgery (i.e., hemorrhage, ischemia, necrosis, inflammation, traumatic disruption). The second most common cause is congenital herat disease associated with complete AV block. Other etiologies of acquired AV block are often reversible and include : Digitalis and other drug intoxications. Viral myocarditis. Acute rheumatic fever, Lyme disease, and infectious mononucleosis.
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