Operative repair of an atrioventricular septal defect is not without risk. The purpose of this review is to highlight various key topics in the perioperative treatment of patients with atrioventricular septal defects, including challenges related to Down syndrome, postoperative arrhythmias, pulmonary hypertension, hypothyroidism, postoperative residual and recurrent lesions, including systemic atrioventricular valvar regurgitation and left ventricular outflow tract obstruction, sedation and analgesia, and vascular access.
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