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July 12, 2026Journal of Interventional Cardiac Electrophysiology

Catheter ablation of ventricular arrhythmias originating from right ventricular posterior papillary muscle-false tendon complexZhang et al. Right ventricular posterior papillary muscle-false tendon complex

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Key result

Ablation eliminates 100% of RV posterior papillary muscle-false tendon complex VAs featuring longer QRS durations.

  • n=24

Why the study?

Posterior papillary muscle and false tendons in the right ventricle may act as a source of ventricular arrhythmias, but their electrophysiological characteristics and ablation outcomes needed systematic description.

What are the electrophysiological characteristics and outcomes of radiofrequency catheter ablation for ventricular arrhythmias originating from the RV PPM-FT complex compared to those from the RV moderator band?

Population

12 patients with VAs associated with RV PPM-FTs complex and 12 control patients with RV MB VAs

Comparison

VAs from RV PPM-FT complex vs VAs from RV moderate band

Design

Case-control study

Authors

JZJ R ZhangCTCheng TangWJWeizhu Ju

Discussion

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Overview

RFCA may be feasible for rare RV PPM-FT VAs; leaves open the need for larger prospective studies to confirm safety and durability.

Key Points

  • This research aims to describe the characteristics and outcomes of catheter ablation for ventricular arrhythmias originating from the right ventricular papillary muscle-false tendon complex.
  • Enrolled 12 patients with ventricular arrhythmias associated with the right ventricular posterior papillary muscle-false tendon complex from a larger cohort of 2184 patients.
  • Used activation mapping, pace mapping, and intracardiac echocardiography to localize arrhythmia origins.
  • Compared findings with a control group of 12 patients with arrhythmias originating from the right ventricular moderate band.
  • PVCs were successfully eliminated by ablation in all patients in the study group.
  • Significant differences in QRS duration and R wave duration were noted between the study group and the control group, particularly in lead V1.
  • A deeper negative component in inferior leads (II, III, aVF) was observed in the study group.

Study Design

Type

Case-Control (n=24)

Structured PICO

What are the electrophysiological characteristics and outcomes of radiofrequency catheter ablation for ventricular arrhythmias originating from the RV PPM-FT complex compared to those from the RV moderator band?

P
Population
24 patients with ventricular arrhythmias, comprising 12 with origins in the right ventricular posterior papillary muscle-false tendon complex and 12 control patients with origins in the moderate band.
E
Exposure
Radiofrequency catheter ablation (RFCA) guided by activation mapping, pace mapping, and intracardiac echocardiography (ICE).
C
Comparator
12 patients with ventricular arrhythmias originating from the right ventricular moderator band (MB).
O
Outcome
Electrophysiological characteristics and outcome of radiofrequency catheter ablation (elimination of premature ventricular contractions).surrogate

Ventricular arrhythmias originating from the right ventricular posterior papillary muscle-false tendon complex have distinct ECG characteristics and can be successfully treated with radiofrequency catheter ablation.

Cite This Study

Zhang et al. (2026) conducted a case-control in Ventricular arrhythmias (n=24). Ventricular arrhythmias originating from the RV PPM-FT complex vs. Ventricular arrhythmias originating from the RV moderate band was evaluated on Electrophysiological characteristics (QRS duration, R wave duration, RS interval) and ablation success. VAs from the RV posterior papillary muscle-false tendon complex had longer QRS durations than those from the moderate band and were successfully eliminated by ablation in all 12 patients.

synapsesocial.com/papers/6a53353e4f7abc118adee355https://doi.org/10.1007/s10840-026-02386-8
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Electrocardiographic and Electrophysiological Characteristics in Idiopathic Ventricular Arrhythmias Originating From the Papillary Muscles in the Left Ventricle2010 · 161 citations
  2. 2Idiopathic Premature Ventricular Complexes Originating From Right Ventricular False Tendons2025 · 1 citations
  3. 3Idiopathic Ventricular Arrhythmias Originating from the Papillary Muscles in the Left Ventricle: Prevalence, Electrocardiographic and Electrophysiological Characteristics, and Results of the Radiofrequency Catheter Ablation2009 · 116 citations
  4. 4Idiopathic Focal Ventricular Arrhythmias Originating from the Anterior Papillary Muscle in the Left Ventricle2009 · 107 citations
  5. 5Ablation of idiopathic ventricular arrhythmias from the right ventricular apex2025