Complete heart block complicating the acute phase of respiratory syncytial virus bronchiolitis.

Respiratory syncytial virus is the most common pathogen causing lower respiratory tract infection in infants. In recent years, the importance of extrapulmonary complications and longterm sequelae including those involving the cardiovascular system has become apparent. We report on a 10 month old infant with respiratory syncytial virus bronchiolitis, the acute phase of which was complicated by irreversible complete heart block, which was managed conservatively.