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February 27, 2009Journal of Cardiovascular Electrophysiology

Idiopathic Focal Ventricular Arrhythmias Originating from the Anterior Papillary Muscle in the Left Ventricle

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Key result

Catheter ablation of anterior papillary muscle ventricular arrhythmias, identified in 6 of 432 patients, required deep radiofrequency lesions for lasting success in 4 patients.

Why the study?

Does catheter ablation successfully treat idiopathic focal ventricular arrhythmias originating from the anterior papillary muscle?

Population

432 consecutive patients undergoing catheter ablation for focal ventricular arrhythmias, from which 6…

Design

Case_series

Authors

TYTakumi YamadaGeneral CardiologyHMH. Thomas McElderryElectrophysiologyTOTaro OkadaElectrophysiology

Discussion

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Implication

Deep RF lesions may be needed for durable anterior papillary muscle VA ablation; leaves optimal technique open in this rare substrate.

Study Design

Type

Observational (n=432)

Structured PICO

Does catheter ablation successfully treat idiopathic focal ventricular arrhythmias originating from the anterior papillary muscle?

P
Population
432 consecutive patients undergoing catheter ablation for focal ventricular arrhythmias, from which 6 patients were identified with VAs (VT n=1, PVCs n=5) originating from the anterior papillary muscle in the left ventricle, all with normal baseline ECG and normal LV systolic function.
I
Intervention
Catheter ablation using radiofrequency current with an irrigated, conventional 8-mm-tip, or 4-mm-tip ablation catheter.
O
Outcome
Suppression of the arrhythmia (lasting success of catheter ablation).

Idiopathic focal ventricular arrhythmias can originate from the anterior papillary muscle, presenting with RBBB and right inferior axis morphology, and often require deep radiofrequency lesions for successful ablation.

Cite This Study

Yamada et al. (2009) conducted an observational in Idiopathic focal ventricular arrhythmias (n=432). Catheter ablation was evaluated. Catheter ablation of anterior papillary muscle ventricular arrhythmias, identified in 6 of 432 patients, required deep radiofrequency lesions for lasting success in 4 patients.

synapsesocial.com/papers/6a159fc479ff98d0de4ee828https://doi.org/10.1111/j.1540-8167.2009.01448.x

Topics

Ventricular arrhythmiasAF ablation outcomes
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Also Consider

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  1. 1Cure of Interfascicular Reentrant Ventricular Tachycardia by Ablation of the Anterior Fascicle of the Left Bundle Branch1995 · 103 citations
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  4. 4Optimizing RF Output for Cooled RF Ablation2004 · 25 citations
  5. 5Real‐time Integration of Intracardiac Echocardiography and Electroanatomic Mapping in PVCs Arising from the LV Anterior Papillary Muscle2009 · 20 citations