We discuss a 9-month-old male baby, submitted to surgery for correction of aortic coarctation, who showed severe bronchospasm, hypoxaemia, and cardio-respiratory arrest, and who died on the fifth postoperative day. The autopsy revealed histological signs of severe pulmonary vasoconstriction, possibly as a consequence of hypoxaemia secondary to bronchiolitis due to infection with the respiratory syncytial virus. This supposition was confirmed when viruses were detected in pulmonary tissue by immunohistochemistry and electron microscopy.
