AbstractsMedical & Health Science

Purpose: Infants born with Heterotaxy Syndrome (HS) often have intestinal malrotation in addition to severe congenital heart disease (CHD). Given the catastrophic risk of midgut volvulus, where the vascular supply to the gut is cut off causing necrotic bowel and possible future short‐gut syndrome following surgery, an elective Ladd procedure is recommended at the first diagnosis of malrotation. In patients with severe CHD, however, the risk of complications from prophylactic surgery is high, especially in infancy prior to stable cardiac palliation. This study sought to determine whether deferring a Ladd procedure during the first six months of life in infants with CHD is safe by focusing on the incidence of volvulus in the HS population, morbidity of volvulus and morbidity of an elective Ladd procedure. Methods: Medical records of patients with HS and intestinal malrotation at Phoenix Children’s Hospital from 2006‐2011 were reviewed. Stage of heart surgery, severity of heart disease, diagnosis of intestinal malrotation, and timing of Ladd procedure if applicable were recorded. Results: 31 patients with HS and intestinal malrotation were identified. Of the 31, 9 had a Ladd procedure prior to six months of age, 2 for volvulus and the other 7 either electively or for less severe GI symptoms that were not suggestive of volvulus. The other 22 did not have a Ladd procedure prior to six months of age. There was one death (1/22) from a non‐gastrointestinal cause in a patient who had not undergone a Ladd procedure. There were no deaths in the 9 patients who underwent a Ladd procedure (0/9). Conclusions: Given the low overall incidence of volvulus in HS, and with continued vigilance for obstructive symptoms, this study suggests that delaying the Ladd procedure in asymptomatic patients with HS and CHD and intestinal malrotation is safe. Watchful waiting may reduce the incidence of cardiac complications during the Ladd procedure by allowing for stabilizing cardiac surgical palliation prior to elective abdominal surgery.