Outcomes of the arterial switch operation in patients with Taussig-Bing anomaly

Ann Thorac Surg. 2011 Aug;92(2):673-9. doi: 10.1016/j.athoracsur.2011.04.032.

Abstract

Background: The arterial switch operation (ASO) is associated with poorer outcomes in patients with Taussig-Bing anomaly (TBA) compared with transposition of the great arteries (TGA). We describe the outcomes after ASO in patients with TBA at a single institution.

Methods: Between 1983 and 2009, 57 patients with TBA underwent the ASO at the Royal Children's Hospital in Melbourne.

Results: Hospital mortality was 5.3% (3 of 57). Larger weight at operation (p=0.015), pulmonary artery banding prior to ASO (p=0.049) and concurrent pulmonary artery banding (p=0.049) were risk factors of early death. Actuarial survival was 94% at 15 years. Follow-up was 84% complete with a mean follow-up of 9.8±6.7 years (range, 6 days to 19.1 years). There was no late mortality. Reintervention was required in 24.4% (11 of 45). Longer cross-clamp time (p=0.027) was a risk factor for reintervention. Freedom from reintervention was 75.3% at 15 years. After ASO, 2.2% (1 of 45) presented with sub-neopulmonary obstruction and 13.3% (6 of 45) had moderate or more neoaortic insufficiency (neo-AI). Surgery prior to ASO was a risk factor for sub-neopulmonary obstruction (p=0.049) and moderate or more neo-AI (p=0.016). Freedom from moderate or more neo-AI was 91.1% at 10 years.

Conclusions: Early mortality has improved over time with no mortality occurring in the last decade. Although patients are doing well on late follow-up, many patients require reintervention and show progression of neo-AI. Close long-term follow-up is warranted as patients are likely to require further reintervention in the second decade after TBA repair.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Actuarial Analysis
  • Aorta / surgery
  • Birth Weight
  • Cause of Death
  • Child
  • Child, Preschool
  • Double Outlet Right Ventricle / mortality
  • Double Outlet Right Ventricle / surgery*
  • Female
  • Follow-Up Studies
  • Hospital Mortality
  • Humans
  • Infant
  • Infant, Newborn
  • Male
  • Postoperative Complications / mortality*
  • Postoperative Complications / surgery
  • Pulmonary Artery / surgery
  • Reoperation
  • Risk Factors
  • Transposition of Great Vessels / mortality
  • Transposition of Great Vessels / surgery
  • Young Adult