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Comparison of Procedural Outcomes Across Different Septal Accessory Pathway Locations Using Contact Force.

Sedef Oksuz1, Muhammed Akif Atlan1, Kaan Yıldız1

  • 1Department of Pediatric Cardiology, Izmir City Hospital, Izmir, Turkey.

Pacing and Clinical Electrophysiology : PACE
|June 10, 2026
PubMed
Summary
This summary is machine-generated.

Contact force (CF) sensing technology improves radiofrequency ablation efficiency in pediatric septal accessory pathway (AP) procedures. This approach enhances procedural speed without compromising safety, though anteroseptal pathways require careful management.

Keywords:
accessory pathwaycontact forcepediatric electrophysiologyradiofrequency ablationseptal pathways

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Area of Science:

  • Electrophysiology
  • Pediatric Cardiology
  • Medical Devices

Background:

  • Septal accessory pathway (AP) ablation in pediatric patients is challenging due to proximity to the atrioventricular (AV) node.
  • Contact force (CF) sensing technology offers potential improvements in safety and efficiency.

Purpose of the Study:

  • To evaluate the impact of CF-sensing technology with a conservative force strategy on procedural efficiency and safety in pediatric septal AP ablation.
  • To compare outcomes between CF-guided ablation and conventional radiofrequency (RF) ablation.

Main Methods:

  • Retrospective analysis of 157 pediatric patients undergoing RF ablation for septal APs.
  • Patients were divided into a CF group (n=77, 5-12g target force) and a non-CF group (n=80, conventional irrigated catheters).

Main Results:

  • The CF group demonstrated significantly shorter total procedure times (65.0 vs. 80.0 min) and RF application times (78.0 vs. 105.0 s).
  • Median CF was 10.0g, with lower RF power (25W vs. 30W) in the CF group.
  • Comparable acute success (98.7% vs. 93.8%) and recurrence rates (5.2% vs. 11.3%) were observed; no major complications occurred.

Conclusions:

  • CF technology with a conservative force strategy (5-12g) enhances procedural efficiency in pediatric septal AP ablation.
  • While efficient for most septal locations, anteroseptal pathways require meticulous titration.
  • Midseptal regions remain most prone to recurrence, and safety is maintained.