Does mitral valve repair matter in infants with ventricular septal defect combined with mitral regurgitation?

Yuriy Y Kulyabin1, Ilya A Soynov1, Alexey V Zubritskiy1

  • 1Department of Pediatric Cardiac Surgery, Siberian Biomedical Research Center, Ministry of Health Russian Federation, Novosibirsk, Russian Federation.

Insights

Simultaneous mitral valve repair (MVR) offers no advantage for infants with ventricular septal defect (VSD) and mitral regurgitation (MR) compared to VSD closure alone. Mild residual MR post-surgery predicts future moderate to severe MR.

Area of Science:

  • Cardiovascular Surgery
  • Pediatric Cardiology
  • Cardiac Surgery Outcomes

Background:

  • Ventricular septal defect (VSD) is a common congenital heart defect.
  • Mitral regurgitation (MR) can coexist with VSD, complicating surgical management.
  • The efficacy of simultaneous mitral valve repair (MVR) alongside VSD closure requires evaluation.

Purpose of the Study:

  • To assess mid-term mitral valve function following combined VSD repair and MVR.
  • To determine the clinical utility of performing MVR concurrently with VSD closure.
  • To identify factors influencing mitral regurgitation progression post-surgery.

Main Methods:

  • Retrospective analysis of 60 patients with VSD and MR from June 2005 to March 2014.
  • Propensity score matching (1:1) created two groups: VSD closure with MVR (n=23) and VSD closure only (n=23).
  • Mid-term follow-up (12-48 months) assessed mitral valve function and recurrence of MR.

Main Results:

  • No significant difference in postoperative mortality or short-term recovery between groups.
  • Longer cardiopulmonary bypass and aortic cross-clamping times were observed in the VSD+MVR group.
  • No significant difference in freedom from moderate or severe MR (MR ≥ 2+) between groups.
  • Mild residual MR in the early postoperative period was the sole significant predictor of recurrent MR ≥ 2+.

Conclusions:

  • Simultaneous MVR provides no additional benefit over isolated VSD closure for patients with VSD and MR.
  • The presence of mild residual MR postoperatively is a critical risk factor for developing significant MR during follow-up.
  • Focusing on achieving complete early MR correction is crucial for long-term outcomes.
Abstract

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