A New Approach for Catheter Ablation of Atrial Fibrillation: a Retrospective Cohort Study
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Atrial Fibrillation
- Sponsor
- The Second Affiliated Hospital of Kunming Medical University
- Enrollment
- 116
- Locations
- 1
- Primary Endpoint
- freedom from AF within 12 months
- Status
- Completed
- Last Updated
- 2 years ago
Overview
Brief Summary
This is a retrospective cohort study of radiofrequency ablation for the treatment atrial fibrillation(AF). Based on the electrophysiological phenomena found in these cases, the investigators propose a hypothesis regarding the underlying electrophysiological mechanism of AF, as well as a novel approach for catheter ablation of AF.
Detailed Description
The investigators propose a new electrophysiological mechanism for AF: the superposition hypothesis. The investigators tested this hypothesis by conducting the retrospective cohort study to determine if superposition potentials (SP) can identify the critical regions where AF is sustained and if ablating SPs can improves the long-term efficacy. The study consecutively collected patients with underwent the first catheter ablation for symptomatic AF in a university hospital from March 2021 to June 2022, including paroxysmal AF (lasting \<7 days), persistent AF (lasting \>7 days and \<1 year without electrical cardioversion) and long-term persistent AF (lasting \>1 year), aged between 18 and 80 years old. AF recurrence was evaluated at 3, 6, 9, and 12 months using 72-hour Holter monitoring at each clinic visit. The eligible patients were divided into two groups: the pulmonary vein isolation(PVI) alone group (n=56) and the PVI + SPs ablation group(n=60).Comprehensive clinical history and procedural data of patients were collected from electronic medical records.
Investigators
mingli Zhou
associate chief physician
The Second Affiliated Hospital of Kunming Medical University
Eligibility Criteria
Inclusion Criteria
- •patients with underwent the first catheter ablation for symptomatic AF
Exclusion Criteria
- •patients with more than one missing follow-up would be excluded
Outcomes
Primary Outcomes
freedom from AF within 12 months
Time Frame: 12 months
AF recurrence was evaluated at 3, 6, 9, and 12 months using 72-hour Holter monitoring at each clinic visit. AF recurrence was defined as the occurrence of AF lasting at least 30 seconds after the 3-month blanking period.
Secondary Outcomes
- the acute termination of AF during the procedure(during the procedure)