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Related Experiment Videos

Monocusp valve in right ventricular outflow tract.

A E Fiane1, H L Lindberg

  • 1Department of Surgery A, Rikshospitalet, University of Oslo, Norway.

Scandinavian Cardiovascular Journal : SCJ
|March 27, 1999
PubMed
Summary
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Monocusp valves in congenital heart disease surgery offer short-term pulmonary regurgitation reduction. However, all patients developed regurgitation, with many experiencing moderate to severe valve failure requiring repeat surgery.

Area of Science:

  • Cardiovascular Surgery
  • Pediatric Cardiology
  • Biomedical Engineering

Background:

  • Congenital heart disease necessitates complex surgical interventions.
  • Right ventricular outflow tract reconstruction is a critical component of corrective surgery.
  • Pulmonary regurgitation remains a significant challenge in these procedures.

Purpose of the Study:

  • To evaluate the efficacy and durability of monocusp valve implants in pediatric patients undergoing right ventricular outflow tract reconstruction.
  • To assess the incidence of pulmonary regurgitation and valve failure following monocusp valve implantation.
  • To determine the long-term outcomes and need for reoperation in patients receiving monocusp valves.

Main Methods:

  • A cohort of sixty pediatric patients (aged 5 days-10.3 years) received monocusp valve implants.

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  • The monocusp valve was surgically attached to the posterior wall of the pulmonary tract.
  • Follow-up duration ranged from 0 to 11.5 years, with a mean of 3.8 years.

    • Main Results:

    • Early and late mortality rates were 8.3% and 3.6%, respectively.
    • All patients developed monocusp valve regurgitation post-implantation.
    • Moderate or severe valve failure occurred in 30 patients, necessitating repeat surgery in seven cases.

    Conclusions:

    • Monocusp valves provide a potential short-term solution for reducing pulmonary regurgitation in right ventricular outflow tract reconstruction.
    • The high incidence of regurgitation and valve failure suggests that long-term outcomes may require further investigation and potentially repeat surgical interventions.
    • Long-term follow-up is crucial to ascertain the ultimate necessity of reoperation for all patients with monocusp valves.