Papillary Muscle Ventricular Tachycardia or Ectopy: Diagnostics, Catheter Ablation and the Role of Intracardiac Echocardiography

Author:

Kautzner Josef1,Peichl Petr1

Affiliation:

1. Department of Cardiology, Institute for Clinical and Experimental Medicine (IKEM), Prague, Czech Republic

Abstract

Ventricular arrhythmias originating from the papillary muscle of the left or right ventricle are specific clinical entities. They are usually focal in origin and can be identified by a characteristic ECG pattern. Intracardiac echocardiography appears to be the most suitable imaging method for assessment of the exact location of the focus at papillary muscles in association with activation mapping. We recently confirmed that ectopic foci were located within the distal, mid, or proximal (basal) third of the papillary muscle in 67%, 19%, and 14% of patients, respectively. Radiofrequency ablation has the potential to cure these specific arrhythmias. However, the procedure is usually challenging for catheter instability, despite navigation with intracardiac echocardiography. Cryoablation, which ensures catheter tip stability, could be a viable alternative in cases of the failure of radiofrequency catheter ablation.

Publisher

Radcliffe Group Ltd

Subject

Physiology (medical),Cardiology and Cardiovascular Medicine

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1. The Use of Pre- and Peri-Procedural Imaging During VT Ablation;Current Treatment Options in Cardiovascular Medicine;2024-01-12

2. Ventricular tachycardia ablation in children;Indian Pacing and Electrophysiology Journal;2023-07

3. An unusual origin of a papillary muscle of the right ventricle;Morphologie;2023-03

4. Case 7;Clinical Cases in Cardiac Electrophysiology: Ventricular Arrhythmias;2023

5. Needle-Tipped Catheter Ablation of Papillary Muscle Results in Deeper and Larger Ablation Lesions;Journal of Cardiovascular Translational Research;2022-10-20

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