Objectives: We sought to assess the efficacy, safety and short-term clinical outcome of very high-power short-duration (vHP-SD) radiofrequency (RF) catheter ablation for the treatment of idiopathic PVCs originating from the cardiac outflow tract (OT).
Background: Power-controlled RF ablation is a widely used technique for the treatment of premature ventricular contractions (PVCs). A novel ablation catheter offers three microelectrodes and six thermocouples at its tip and provides temperature-controlled vHP-SD (90 Watts/4 s,) with the opportunity to switch to moderate-power mode.
Methods: In this pilot study, twenty-four consecutive, prospectively enrolled patients underwent PVC ablation utilizing the vHP-SD ablation (study group) and were compared with 24 consecutive patients previously treated with power-controlled ablation (control group). Each group included 12 patients with PVCs originating from the right ventricular OT (RVOT) and 12 patients with PVCs originating from the left ventricular OT (LVOT). The acute endpoint was PVC elimination and was achieved in all patients.
Results: In 16/24 (67%) patients (study group) it was achieved by using vHP-SD only. The median RF delivery time was 52 (interquartile range [IQR] 16, 156) seconds (study group) and 350 (IQR 240, 442) seconds (control group, p < 0.0001). No difference was observed regarding procedure duration (p = 0.489) as well as 6-months follow-up (p = 0.712). One (4%, study group) and 2 (8%, control group) severe adverse events occured (p = 0.551).
Conclusion: In this study vHP-SD PVC ablation was similarly effective and safe as compared to conventional power-controlled ablation. The RF time was significantly shorter.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9092262 | PMC |
| http://dx.doi.org/10.1016/j.ijcha.2022.101042 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Beyond the usual challenges, a case of LV summit PVCs ablation in child with ASO for D-TGA.
BMC Cardiovasc Disord
December 2024
Magdi Yacoub Heart Foundation, Cairo, Egypt.
Premature ventricular contractions (PVCs) are a common finding in patients with surgically repaired congenital heart defects including transposition of the great arteries (D-TGA). While often asymptomatic, PVCs can sometimes lead to palpitations, dyspnea, and hemodynamic compromise, requiring therapeutic intervention. The arterial switch operation is the preferred treatment for D-TGA, but these patients have a 2% incidence of ventricular arrhythmias and 1% incidence of sudden cardiac death post-operatively.
View Article and Find Full Text PDFMultistep Algorithm to Predict RVOT PVC Site of Origin for Successful Ablation Using Available Criteria: A Two-Center Cross-Validation Study.
Pacing Clin Electrophysiol
January 2025
Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
Background: Predicting premature ventricular contraction (PVC) origin pre-ablation is a fundamental step, as right ventricular outflow tract (RVOT) PVC often leads to higher success rates.
Objective: To compare nine published ECG criteria to differentiate between RVOT and non-RVOT origins of PVCs and develop a stepwise algorithm using those criteria to better determine PVC origin to predict ablation success.
Methods: Two centers were involved in this study, the derivation group and the validation group.
Usefulness of Apple Watch Electrocardiograms for Identifying the Origin of Premature Ventricular Contractions.
Circ J
January 2025
Department of Cardiovascular Medicine, Endocrinology and Metabolism, Faculty of Medicine, Tottori University.
Background: The Apple Watch (AW) can record single-lead electrocardiograms (ECGs) and has been investigated for arrhythmia detection. In this study we evaluated its accuracy in identifying the origin of premature ventricular contractions (PVCs) vs. standard 12-lead ECGs.
View Article and Find Full Text PDFTime to first nadir of the QRS complex in aVR/time to first nadir of the QRS complex in aVL: A novel method for distinguishing left from right outflow tract premature ventricular complexes (PVCs) with precordial transition in V3.
J Electrocardiol
January 2025
Prof. Marmara University School of Medicine, Department of Cardiology, Istanbul, Turkey.
Article Synopsis
- The study aimed to evaluate a specific ECG measurement—the 'time to first nadir of the QRS complex in aVR compared to aVL'—to differentiate between left and right outflow tract premature ventricular complexes (PVCs) in patients.
- Data was collected from 88 patients who underwent ablation for outflow tract PVCs, finding that 57.9% had PVCs originating from the left ventricular outflow tract (LVOT) and 42.1% from the right ventricular outflow tract (RVOT).
- The findings suggest that while this new measurement isn't as precise as existing ECG criteria, it can still assist in determining the origin of PVCs, with certain ratios indicating a higher likelihood of RVOT
Outcome of repeat ablation for premature ventricular contractions in patients with prior ablation failure: Impact of advanced techniques.
Heart Rhythm
November 2024
Cardiovascular Division, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee. Electronic address:
Background: The utility of repeat ablation for premature ventricular contractions (PVCs) after prior ablation failure is not clear.
Objective: The purpose of this study was to assess the outcomes of repeat ablation and the use of different techniques in patients who failed prior PVC ablation.
Methods: We reviewed 239 consecutive patients who underwent PVC ablation.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!