Abstract
Thirty-seven patients with atrial flutter were studied with catheter mapping and radiofrequency ablation. Uncommon atrial flutter occurred in 20 out of 37 (54%) patients. Atrial endocardial mapping showed two types of uncommon atrial flutter. In 15 patients (group I) it was characterized by a single clockwise circuit whereas in 5 patients (Group II) it was characterized by the presence of more than one circuit and/or localized atrial fibrillation. RFA ablation was acutely successful in 14 out of 15 patients (93%) in Group I and in 2 out of 5 (40%) patients in Group II. On long-term follow-up a significantly larger number of patients in Group I versus Group II (86% vs 20%) remained free of atrial flutter recurrence. We conclude that uncommon atrial flutter is a heterogeneous entity involving one or more reentrant circuits. Uncommon atrial flutter with multiple circuits may not be suitable for RFA.
Original language | English (US) |
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Pages (from-to) | 2029-2042 |
Number of pages | 14 |
Journal | PACE - Pacing and Clinical Electrophysiology |
Volume | 21 |
Issue number | 11 I |
DOIs | |
State | Published - Nov 1998 |
Externally published | Yes |
Keywords
- Atrial fibrillation
- Coronary sinus
- Radiofrequency ablation
- Uncommon atrial flutter
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine