The value of the ablation index in patients undergoing ablation for atrial fibrillation.
Kardiol Pol
; 78(10): 1015-1019, 2020 10 23.
Article
in En
| MEDLINE
| ID: mdl-32692030
ABSTRACT
BACKGROUND:
Data on the results of ablation for atrial fibrillation (AF) in Poland are scarce.AIMS:
The aim of the study was to compare the efficacy of ablation index (AI)-guided pulmonary vein isolation (PVI) with that of conventional contact force-based PVI.METHODS:
Consecutive patients undergoing PVI for the first time were included in the study. A nonrandomized retrospective comparison was made between patients ablated with contact force before AI was introduced (non -AI group) and patients ablated with the use of AI (AI group). The AI threshold for the anterior wall / roof of left veins was 500 and 380 elsewhere. The maximal interlesion distance was 6 mm. The follow -up included outpatient visits and 7-day Holter monitoring 6 and 12 months after ablation.RESULTS:
A total of 275 patients were included in theanalysis:
133 in the AI group and 142 in the non--AI group. The duration of AF ablation was slightly longer in the AI group, but the fluoroscopy time and the radiofrequency ablation time were shorter in the same group. During the 12-month follow -up period, 25.8% and 40.6% of patients from the AI and non -AI groups, respectively, experienced recurrences (P = 0.02). The log -rank test with an extended follow -up period of up to 18 months confirmed the difference between the AI and non -AI groups, both in the whole group and in the paroxysmal AF and nonparoxysmal AF subgroups (P = 0.001, P = 0.04, and P = 0.006, respectively).CONCLUSION:
The AI -based protocol provides a significant advantage over traditional contact force-based radiofrequency ablation in nonselected patients undergoing PVI.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pulmonary Veins
/
Atrial Fibrillation
/
Catheter Ablation
Type of study:
Observational_studies
Limits:
Humans
Country/Region as subject:
Europa
Language:
En
Journal:
Kardiol Pol
Year:
2020
Document type:
Article
Affiliation country: