Características clínicas úteis para seleçäo do candidato ideal para mapeamento e ablaçäo de fibrilaçäo atrial / Useful clinical features for the selection of ideal patients with atrial fibrillation for mapping and catheter ablation
Arq. bras. cardiol
; 78(1): 1-16, Jan. 2002. ilus, tab
Article
in Portuguese, English
| LILACS
| ID: lil-301414
Responsible library:
BR1.1
ABSTRACT
OBJECTIVE:
To identify useful clinical characteristics for selecting patients eligible for mapping and ablation of atrial fibrillation.METHODS:
We studied 9 patients with atrial fibrillation, without structural heart disease, associated with 1) antiarrhythmic drugs, 2) symptoms of low cardiac output, and 3) intention to treat. Seven patients had paroxysmal atrial fibrillation and 2 had recurrent atrial fibrillation.RESULTS:
In the 6 patients who underwent mapping (all had paroxysmal atrial fibrillation), catheter ablation was successfully carried out in superior pulmonary veins in 5 patients (the first 3 in the left superior pulmonary vein and the last 2 in the right superior pulmonary vein). One patient experienced a recurrence of atrial fibrillation after 10 days. We observed that patients who had short episodes of atrial fibrillation on 24-hour Holter monitoring before the procedure were those in whom mapping the focus of tachycardia was possible. Tachycardia was successfully suppressed in 4 of 6 patients. The cause of failure was due to the impossibility of maintaining sinus rhythm long enough for efficient mapping.CONCLUSION:
Patients experiencing short episodes of atrial fibrillation during 24-hour Holter monitoring were the most eligible for mapping and ablation, with a final success rate of 66 percent, versus the global success rate of 44 percent. Patients with persistent atrial fibrillation were not good candidates for focal ablation
Full text:
Available
Collection:
International databases
Database:
LILACS
Main subject:
Atrial Fibrillation
/
Catheter Ablation
/
Patient Selection
/
Electrophysiologic Techniques, Cardiac
Type of study:
Prognostic study
Limits:
Adult
/
Aged, 80 and over
/
Humans
/
Male
Language:
English
/
Portuguese
Journal:
Arq. bras. cardiol
Journal subject:
Cardiology
Year:
2002
Document type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Hospital Angelina Caron/BR