scholarly journals Catheter Ablation of Premature Ventricular Contractions Originating from Kissing Papillary Muscles

2021 ◽  
Author(s):  
Takumi Yamada ◽  
Krittapoom Akrawinthawong
Keyword(s):  
Catheter Ablation ◽  
Left Ventricular ◽  
Papillary Muscles ◽  
Premature Ventricular Contractions

A 73-year-old woman with premature ventricular contractions (PVCs) had very thick left ventricular papillary muscles (PAMs) kissing each other. The PVC origin at the septal side of the anterolateral PAM that faced the posteromedial PAM, rendered mapping confusing. This case illustrated an unusual challenge in catheter ablation of PAM PVCs.

scholarly journals B-PO05-128 THE EFFECT OF CATHETER ABLATION FOR VENTRICULAR ARRHYTHMIAS ORIGINATING FROM THE LEFT VENTRICULAR PAPILLARY MUSCLES ON MITRAL VALVE FUNCTION

Heart Rhythm ◽  
2021 ◽  
Vol 18 (8) ◽  
pp. S424
Author(s):  
Joshua Sink ◽  
Alexander Turin ◽  
Joseph Cytron ◽  
Alexander Green ◽  
Peter Santucci ◽  
...  
Keyword(s):  
Catheter Ablation ◽  
Mitral Valve ◽  
Ventricular Arrhythmias ◽  
Left Ventricular ◽  
Papillary Muscles ◽  
Valve Function

Catheter Ablation of Premature Ventricular Contractions From the Left Ventricular Summit

2016 ◽  
Vol 69 (10) ◽  
pp. 992-994
Author(s):  
Finn Akerström ◽  
Marta Pachón ◽  
Alberto Puchol ◽  
Irene Narváez ◽  
Luis Rodríguez-Padial ◽  
...  
Keyword(s):  
Catheter Ablation ◽  
Left Ventricular ◽  
Premature Ventricular Contractions

scholarly journals Cardiac MRI structural and functional predictors of left ventricular ejection fraction recovery following PVC catheter ablation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jessica Mao ◽  
Eric Xie ◽  
Ela Chamera ◽  
Joao A. C. Lima ◽  
Jonathan Chrispin
Keyword(s):  
Catheter Ablation ◽  
Recovery Of Function ◽  
Left Ventricular ◽  
Structure And Function ◽  
Left Ventricular Ejection ◽  
Cardiac Structure ◽  
Premature Ventricular Contractions ◽  
Ventricular Ejection Fraction ◽  
Cardiac Structure And Function ◽  
And Function

AbstractFrequent premature ventricular contractions (PVCs) can induce cardiomyopathy (PVC CM). We sought to use cardiac magnetic resonance imaging (CMR) to quantify changes in cardiac structure and function of cardiomyopathy patients following catheter ablation for PVCs. Patients undergoing PVC ablation at the Johns Hopkins Hospital with pre-procedural CMR from 2010 to 2018 were included in this study. CMR Images were analyzed to collect information on cardiac structure and function as well as to quantify scar. Of the total 51 included patients, PVC CM (LVEF < 45%) was observed in 51% (n = 29). Of these, 19 had post-ablation ejection fractions quantified, with 78.9% (n = 15) recovering function. Global longitudinal strain was significantly correlated with LVEF (OR 1.831, p < 0.01) but did not predict recovery of function. RV origin of PVCs was more common in the preserved LVEF group but was also significantly correlated with persistently reduced EF post-ablation in the PVC CM group. Scar burden was not correlated with either cardiac function or post-ablation recovery of function. In this cohort, there were no significant CMR findings to predict subsequent recovery of EF after ablation among those with PVC CM. PVC origin in the RV was associated with persistently reduced LVEF after ablation.

scholarly journals Prospective use of ablation index for the ablation of right ventricle outflow tract premature ventricular contractions: a proof of concept study

EP Europace ◽  
2020 ◽  
Author(s):  
Alessio Gasperetti ◽  
Rita Sicuso ◽  
Antonio Dello Russo ◽  
Giulio Zucchelli ◽  
Ardan Muammer Saguner ◽  
...  
Keyword(s):  
Catheter Ablation ◽  
Ejection Fraction ◽  
Right Ventricle ◽  
Radiofrequency Catheter Ablation ◽  
Left Ventricular ◽  
Outflow Tract ◽  
Left Ventricular Ejection ◽  
Free Wall ◽  
Premature Ventricular Contractions ◽  
Ablation Index

Abstract Aims Radiofrequency catheter ablation (RFCA) represents an effective option for idiopathic premature ventricular contractions (PVCs) treatment. Ablation Index (AI) is a novel ablation marker incorporating RF power, contact force, and time of delivery into a single weighted formula. Data regarding AI-guided PVCs RFCA are currently lacking. Aim of the study was to compare AI-guided and standard RFCA outcomes in patients with PVCs originating from the right ventricle outflow tract (RVOT). Methods and results Consecutive patients undergoing AI-guided RFCA of RVOT idiopathic PVCs were prospectively enrolled. Radiofrequency catheter ablation was performed following per-protocol target cut-offs of AI, depending on targeted area (RVOT free wall AI cut-off: 590; RVOT septum AI cut-off: 610). A multi-centre cohort of propensity-matched (age, sex, ejection fraction, and PVC site) patients undergoing standard PVCs RFCA was used as a comparator. Sixty AI-guided patients (44.2 ± 18.0 years old, 58% male, left ventricular ejection fraction 56.2 ± 3.8%) were enrolled; 34 (57%) were ablated in RVOT septum and 26 (43%) patients in the RVOT free wall area. Propensity match with 60 non-AI-guided patients was performed. Acute outcomes and complications resulted comparable. At 6 months, arrhythmic recurrence was more common in non-AI-guided patients whether in general (28% vs. 7% P = 0.003) or by ablated area (RVOT free wall: 27% vs. 4%, P = 0.06; RVOT septum 29% vs. 9% P = 0.05). Ablation Index guidance was associated with improved survival from arrhythmic recurrence [overall odds ratio 6.61 (1.95–22.35), P = 0.001; RVOT septum 5.99 (1.21–29.65), P = 0.028; RVOT free wall 11.86 (1.12–124.78), P = 0.039]. Conclusion Ablation Index-guidance in idiopathic PVCs ablation was associated with better arrhythmic outcomes at 6 months of follow-up.

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