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Related Experiment Videos

Closed transventricular pulmonary valvotomy in infants

D A Daskalopoulos, D R Pieroni, R L Gingell

    The Journal of Thoracic and Cardiovascular Surgery
    |August 1, 1982
    PubMed
    Summary

    Closed transventricular valvotomy is effective for infants with severe pulmonary stenosis and adequate right ventricular size. This procedure avoids cardiopulmonary bypass and yields good long-term outcomes, with small right ventricles indicating higher surgical risk.

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    Area of Science:

    • Pediatric Cardiology
    • Cardiovascular Surgery
    • Congenital Heart Disease

    Background:

    • Severe pulmonary stenosis in infants poses significant challenges.
    • Assessing surgical interventions for this condition is crucial for improving outcomes.

    Purpose of the Study:

    • To reassess the efficacy of closed transventricular valvotomy in infants with severe pulmonary stenosis.
    • To evaluate long-term clinical and hemodynamic results.
    • To identify predictors of surgical survival.

    Main Methods:

    • Retrospective review of 24 infants undergoing closed transventricular valvotomy.
    • Comparison of pre- and postoperative clinical and hemodynamic data.
    • Long-term follow-up including cardiac catheterization and assessment of right ventricular end-diastolic volume (RVEDV).

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    Main Results:

    • All 20 survivors were asymptomatic at long-term follow-up with improved cardiac function.
    • Significant reduction in right ventricular-to-left ventricular peak systolic pressure ratio (RV:LV) post-surgery (mean 1.31 to 0.42, p < 0.001).
    • A small preoperative RV (RVEDV < 23 ml/m2) was associated with increased mortality (p = 0.075).

    Conclusions:

    • Closed transventricular valvotomy is a successful treatment for severe pulmonary stenosis in infants with adequate right ventricular size.
    • The procedure avoids cardiopulmonary bypass and offers favorable long-term results.
    • Preoperative RV size is a critical factor in surgical risk stratification.