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Reduction of Iatrogenic Atrial Septal Defects with an Anterior and Inferior Transseptal Puncture Site when Operating the Cryoballoon Ablation Catheter
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Reduction of Iatrogenic Atrial Septal Defects with an Anterior and Inferior Transseptal Puncture Site when Operating the Cryoballoon Ablation Catheter

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Functional abnormalities of the conduction system in children with an atrial septal defect

M T Bink-Boelkens1, A Bergstra, M L Landsman

  • 1Department of Pediatrics, University of Groningen, The Netherlands.

International Journal of Cardiology
|August 1, 1988
PubMed

Insights

Children with atrial septal defects often have sinus node and atrial dysfunction. Early surgical repair may prevent arrhythmias and further electrophysiologic abnormalities.

Area of Science:

  • Pediatric Cardiology
  • Electrophysiology
  • Congenital Heart Disease

Background:

  • Atrial septal defects (ASDs) are common congenital heart conditions.
  • Cardiac electrophysiologic abnormalities can occur in children with ASDs.
  • The impact of ASDs on cardiac conduction and rhythm requires further investigation.

Purpose of the Study:

  • To evaluate electrophysiologic function in children with ASDs.
  • To assess pre- and postoperative cardiac rhythm and conduction.
  • To determine the relationship between ASDs and electrophysiologic abnormalities.

Main Methods:

  • Electrophysiologic studies were conducted in 40 children with ASDs.
  • Pre- and postoperative electrocardiograms (ECGs) and 24-hour Holter recordings were analyzed.
  • Sinus node recovery time, sinuatrial conduction, atrial conduction, and refractory periods were assessed.

Main Results:

  • 83% of children showed prolonged corrected sinus node recovery time.
  • Abnormal sinuatrial conduction (25%), early Wenckebach (18%), and prolonged atrial conduction (16%) were observed.
  • Postoperative ECGs and Holter recordings indicated a decrease in first-degree atrioventricular block and accelerated atrial rhythm.

Conclusions:

  • Children with ASDs exhibit sinus node, atrioventricular node, and atrial myocardial dysfunction.
  • Early surgical intervention for ASDs may prevent the progression of electrophysiologic abnormalities.
  • Prompt treatment could reduce the incidence of symptomatic arrhythmias in pediatric patients.

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