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Related Concept Videos

Assessment of apical radial pulse01:25

Assessment of apical radial pulse

Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation

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Related Experiment Video

Updated: May 11, 2026

Multiparametric Optical Mapping of the Langendorff-perfused Rabbit Heart
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A Novel Wave-speed Mapping Method for Visualizing Accessory Pathways in Wolff-Parkinson-White Syndrome.

Koji Sudo1, Kenji Kuroki1, Tetsuya Asakawa2

  • 1Department of Cardiovascular Medicine, University of Yamanashi, Chuo, Japan.

Journal of Cardiovascular Electrophysiology
|December 18, 2024
PubMed
Summary
This summary is machine-generated.

Wave-speed mapping (WSM) precisely locates accessory pathways (APs) in Wolff-Parkinson-White syndrome. This novel method visualizes APs as "high-speed islets," guiding more accurate catheter ablation and improving patient outcomes.

Keywords:
Wolff–Parkinson–White syndromeaccessory pathwaycatheter ablationhigh‐density mappingomnipolar technologywave‐speed mapping

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Technology

Background:

  • Catheter ablation (CA) is a primary treatment for symptomatic Wolff-Parkinson-White syndrome.
  • Three-dimensional (3D) mapping systems are crucial for identifying accessory pathways (APs).

Purpose of the Study:

  • To develop and evaluate a novel wave-speed mapping (WSM) method for locating APs.
  • To assess the efficacy of WSM in guiding CA and its impact on ablation outcomes.

Main Methods:

  • Compared WSM with local activation time (LAT) mapping in 19 patients with atrioventricular reciprocating tachycardia.
  • Analyzed the correlation between WSM's "high-speed islets" and successful ablation sites.
  • Median mapping points: 1451; Median mapping time: 14.6 minutes.

Main Results:

  • All 20 APs were successfully eliminated using WSM-guided ablation.
  • 55% of APs were ablated successfully on the first attempt.
  • WSM identified significantly narrower AP widths compared to LAT mapping (5.8 mm vs. 10.4 mm).
  • No supraventricular tachycardias recurred during a mean follow-up of 13.1 months.

Conclusions:

  • WSM is an effective novel mapping technique for visualizing APs as "high-speed islets".
  • WSM facilitates more precise ablation site targeting compared to traditional LAT mapping.
  • WSM-guided CA demonstrates high success rates and favorable long-term outcomes.