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Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
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Is the function of all cardiac valves after the arterial switch operation influenced by an associated ventricular

J Gabriel1, H-H Scheld, T D T Tjan

  • 1Department of Thoracic and Cardiovascular Surgery, University Hospital Muenster, Albert-Schweitzer-Strasse, Muenster, Germany.

Cardiology in the Young
|February 16, 2011
PubMed

Insights

In transposition of the great arteries, a ventricular septal defect has minimal impact on long-term valve function after arterial switch surgery. Valve function remains comparable between patients with and without ventricular septal defects.

Area of Science:

  • Cardiology
  • Pediatric Cardiac Surgery
  • Congenital Heart Disease

Background:

  • Transposition of the great arteries (TGA) is a critical congenital heart defect.
  • The arterial switch operation (ASO) is a common surgical repair for TGA.
  • The presence of a ventricular septal defect (VSD) in TGA may influence post-operative outcomes.

Purpose of the Study:

  • To compare the valvar function after ASO in patients with TGA and VSD versus TGA with an intact ventricular septum (IVS).
  • To assess the long-term impact of VSD on cardiac valve function following ASO.

Main Methods:

  • Retrospective analysis of 92 patients who underwent ASO for TGA.
  • Patients were divided into two groups: TGA/VSD (n=28) and TGA/IVS (n=64).
  • Cardiac valve function (neo-aortic, neo-pulmonary, mitral, tricuspid) was evaluated pre-operatively, post-operatively, at 1 year, and during follow-up (mean 51.7-55 months).

Main Results:

  • No significant differences in neo-aortic, neo-pulmonary, or mitral valve function between TGA/VSD and TGA/IVS groups.
  • Tricuspid regurgitation was more frequent at 1 year post-operatively in the TGA/VSD group.
  • Neo-aortic regurgitation and pulmonary stenosis prevalence increased over time, particularly in the TGA/IVS group.

Conclusions:

  • The presence of a VSD in TGA undergoing ASO has a minor impact on the development of valvar dysfunction during longer follow-up.
  • While tricuspid regurgitation may be more common early post-operatively in TGA/VSD patients, long-term valve outcomes are largely similar.
  • Surgeons should monitor for progressive neo-aortic regurgitation and pulmonary stenosis in all TGA repair patients.

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