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Prevalence and Short-Term Outcomes of Postprocedural Complete Heart Block in Congenital Heart Disease Correction in

Chehreh Mahdavi1, Mohammad Reza Sabri1, Alireza Ahmadi1

  • 1Pediatric Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.

The Journal of Tehran Heart Center
|September 22, 2025
PubMed

Insights

Complete heart block (CHB) occurred in 2.6% of pediatric patients after congenital heart defect (CHD) correction. Younger patients and surgical procedures were linked to higher CHB risk, necessitating vigilant post-procedure monitoring.

Area of Science:

  • Pediatric Cardiology
  • Cardiac Surgery
  • Congenital Heart Defects

Background:

  • Complete heart block (CHB) is a recognized complication following congenital heart disease (CHD) correction in children.
  • Limited data exists on the incidence and short-term outcomes of postprocedural CHB in this pediatric population.

Purpose of the Study:

  • To determine the prevalence of postprocedural CHB in pediatric patients undergoing surgical or transcatheter CHD correction.
  • To analyze the risk factors and short-term outcomes associated with postprocedural CHB.

Main Methods:

  • Retrospective cohort study of 840 pediatric patients (<18 years) undergoing CHD correction.
  • Exclusion of patients with pre-existing arrhythmias or heart block.
  • Analysis of medical records for postprocedural CHB incidence, risk factors, and outcomes.

Main Results:

  • CHB was identified in 2.6% of patients (0.6% transcatheter, 4.7% surgical).
  • Younger age, surgical procedures, and ventricular septal defects (VSD) were associated with increased CHB risk.
  • CHB patients had longer pediatric cardiac critical care unit stays; in-hospital mortality was 5.2% without CHB correlation.

Conclusions:

  • Postprocedural CHB monitoring is crucial, especially in younger pediatric patients, for timely intervention.
  • Further research is needed on long-term complications and risk factors of CHB post-CHD correction.
Abstract

Keywords:
Complete heart blockCongenital heart diseasePediatricPostproceduralSurgical correction

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