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Comparison between cryotherapy and radiofrequency energy sources for parahisian accessory pathway percutaneous ablation.
J Interv Card Electrophysiol
June 2024
Cardiac Arrhythmia Unit, Heart Institute (InCor), University of Sao Paulo Medical School, Sao Paulo, SP, Brazil.
Article Synopsis
- Catheter ablation for parahisian accessory pathways (PHAP) is challenging due to their close proximity to the heart's normal conduction system, with cryoablation showing a better safety profile but higher recurrence rates than radiofrequency ablation (RFCA).
- This study involved 30 patients and compared the effectiveness of RFCA and cryoablation, finding similar acute success rates (93% for RFCA vs. 87% for CRYO) and no significant differences in short-term or long-term recurrence rates.
- The researchers concluded that both RFCA and CRYO have comparable efficacy and safety profiles when performed by experienced electrophysiologists, with no cases of permanent AV block reported in either method.
Anatomical approach to suppression of para-Hisian ventricular arrhythmias with changes in QRS morphology after ablation at the earliest activation site.
Heart Rhythm
November 2024
Department of Cardiology, Japan Red Cross Yokohama City Bay Hospital, Kanagawa, Japan.
Background: The anatomical approach for the management of para-Hisian ventricular arrhythmias (VAs) with QRS morphological changes after catheter ablation (CA) has not been well investigated.
Objective: We aimed to evaluate the electrocardiographic and electrophysiological findings and ablation outcomes of para-Hisian VAs with QRS morphological changes after CA.
Methods: Of the 30 patients who underwent CA for para-Hisian VAs at 4 institutions, 10 (33%) had QRS morphological changes after ablation.
Cryoablation of para-Hisian and mid-septal accessory pathways: long-term outcomes of a specific stepwise cryoablation protocol.
Minerva Cardiol Angiol
June 2023
Department of Heart and Vessels, Ospedale di Circolo e Fondazione Macchi, University of Insubria, Varese, Italy.
Background: Although cryoablation (CA) of septally located accessory pathways (APs) is an established treatment for Wolff-Parkinson-White Syndrome, its major limitation is the lack of data regarding long-term follow-up (FU). The present study sought to investigate long-term outcomes of a specific CA protocol targeting para-Hisian (P-H) and mid-septal (M-S) APs.
Methods: Twenty-six patients who previously underwent CA of PH or MS APs from 2004 to 2014, were prospectively considered to receive a FU during 2021.
Catheter ablation of para-hisian premature ventricular contractions using electroanatomical mapping: Approaches and pitfalls.
North Clin Istanb
May 2022
Department of Cardiology, Samsun Training and Research Hospital, Samsun, Turkiye.
A 58-year-old female patient presented at cardiology outpatient clinic with palpitation. The 12-lead electrocardiography on admission revealed monomorphic bigeminy premature ventricular contractions (PVCs) showed a left bundle-branch block configuration, monophasic R wave in lead I and aVL and precordial transition in V3 lead. Cardiac electrophysiological study was performed to patient.
View Article and Find Full Text PDFAtrioventricular block following prolonged focal cryoablation for parahisian premature ventricular complexes.
Indian Pacing Electrophysiol J
August 2022
Hospital Universitario 12 de Octubre, Madrid, Spain.
A 54-year-old woman with symptomatic premature ventricular contractions (PVC) was referred for electrophysiological study. The earliest activation was located at the parahisian area, so it was decided to ablate using cryoenergy. No AV conduction impairment was observed during cryomapping.
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