Long-term outcomes of infant mitral valve surgery

Segolene Bernheim1,2, Margaux Pontailler1, Alexander Moiroux-Sahraoui3

  • 1Department of Pediatric Cardiac Surgery, Pediatric Cardiac Intensive Cardiac Unit, Hôpital Necker-Enfants Malades, Assistance Publique - Hôpitaux de Parishttps://ror.org/05tr67282, Paris, France.

Cardiology in the Young
|December 9, 2025
PubMed

Insights

Mitral valve repair in infants shows better survival than replacement, though re-intervention is common for both. Surgery for congenital mitral valve disease under one year is high-risk, with repair delaying but not always preventing future valve replacement.

Area of Science:

  • Pediatric Cardiology
  • Congenital Heart Disease
  • Cardiac Surgery

Background:

  • Infants with mitral valve disease require surgical intervention.
  • Congenital mitral valve disease encompasses stenosis, regurgitation, or mixed pathologies.
  • Surgical options include mitral valve repair or replacement.

Purpose of the Study:

  • To evaluate patient outcomes after mitral valve repair or replacement in infants under one year of age.
  • To compare mortality and re-intervention rates between mitral repair and replacement.
  • To assess long-term survival and the need for subsequent interventions.

Main Methods:

  • Monocentric retrospective study of 56 infants undergoing mitral valve surgery (repair or replacement) before one year of age.
  • Data collected over 22 years (2001-2023).
  • Outcomes assessed included early and late mortality, and re-intervention rates.

Main Results:

  • Mitral valve repair was performed in 39 patients, and replacement in 17.
  • Replacement group had longer ICU/hospital stays and ventilation times, with higher early mortality (12% vs. 0%).
  • Survival was significantly higher in the repair group (p=0.039). Re-intervention was needed in 41.1% of patients, with re-intervention-free survival rates at 10 years of 46% for repair and 55% for replacement.

Conclusions:

  • Mitral valve surgery in infants is high-risk with a significant need for re-intervention.
  • Mitral repair offers superior short-term survival outcomes compared to replacement.
  • While repair may delay, it does not always prevent the eventual need for valve replacement.
Abstract

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