Disparity in right vs left ventricular recovery during follow-up after ventricular septal defect correction in

Liselotte M Klitsie1, Irene M Kuipers, Arno A W Roest

  • 1Department of Pediatric Cardiology, Leiden University Medical Center, Leiden, Netherlands.

Insights

Pediatric ventricular septal defect (VSD) repair leads to excellent long-term outcomes. While left ventricular function recovers within a year, right ventricular systolic performance remains impaired long after VSD surgery.

Area of Science:

  • Pediatric Cardiology
  • Cardiac Surgery
  • Echocardiography

Background:

  • Ventricular septal defect (VSD) correction in childhood offers excellent long-term prognosis.
  • Post-VSD surgery, transient biventricular systolic dysfunction is often observed in pediatric patients.
  • Understanding the temporal dynamics of this systolic performance decrease is crucial for patient management.

Purpose of the Study:

  • To characterize biventricular systolic performance following VSD closure in pediatric patients.
  • To assess the time-course of systolic performance changes up to 20 months postoperatively.
  • To identify potential factors contributing to persistent right ventricular impairment.

Main Methods:

  • Echocardiographic assessment of left (LV) and right ventricular (RV) systolic performance in 39 children post-VSD surgery and 22 controls.
  • Measurements included LV fractional shortening, tricuspid annular plane systolic excursion (TAPSE), and tissue Doppler imaging (S').
  • Evaluations were conducted preoperatively, 1 day postoperatively, at discharge, and 3-20 months postoperatively.

Main Results:

  • Biventricular systolic performance initially decreased but showed significant recovery within the first year post-VSD surgery.
  • LV systolic performance normalized by medium-term follow-up (8.4 ± 5.3 months).
  • RV systolic performance parameters (TAPSE, RV S') remained significantly impaired compared to controls at medium-term follow-up.

Conclusions:

  • LV systolic function normalizes within one year after VSD correction.
  • RV systolic performance remains significantly impaired up to 20 months post-VSD closure.
  • Both cardiopulmonary bypass effects and preoperative conditions may contribute to persistent RV dysfunction post-VSD surgery.
Abstract

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