069 CASE SERIES OF ATRIAL FLUTTER WITH 1:1 CONDUCTION: A COMPARATIVE ANALYSIS AMONG GROUPS OF PATIENTS SUFFERING SPONTANEOUS VERSUS DRUG INDUCED 1:1 CONDUCTING ATRIAL FLUTTER. (24th May 2013)

• Record Type: Journal Article
• Authors: Nathwani, V N; Wong, K W; Jones, M J; Hayes, C H; Rajappan, K R; Betts, T B; Bashir, Y B
• Is Part Of: Heart. Volume 99(2013)Supplement 2
• Page Start: A45
• Page End: A45
• Publication Date: 2013-05-24
• Subjects: Heart -- Diseases -- Treatment -- Periodicals; Cardiology -- Periodicals; 616.12
• DOI: 10.1136/heartjnl-2013-304019.69
• Languages: English
• ISSNs: 1355-6037

Abstract

Abstract : Background: Atrial flutter with 1:1 (AFL 1:1) conduction may be spontaneous or secondary to anti-arrhythmic drug (AAD) use. This group of patients are not well characterised. We aimed to compare various characteristics between patients suffering 'spontaneous' AFL 1:1 (the development of 1:1 Atrioventricular conducting Atrial Flutter in the absence of concomitant AAD use) and 'Drug-induced' AFL 1:1. Methods: This is a retrospective study of patients referred to our institution over an 8 year period. Sixty-eight patients had confirmed and documented atrial flutter with 1:1 conduction. Results: Baseline clinical characteristics and differences between the study populations are summarised in Table. Patients with spontaneous AFL 1:1 had a significantly higher flutter rate and were less likely to have concomitant AF. Drug-induced AFL 1:1 was mainly secondary to Class 1 AAD's despite the use of AV blocking agents in a third of these patients. Sixty-three patients underwent a successful cavotricuspid isthmus ablation with no recurrence. Conclusions: We have reported the largest series of patients with atrial flutter and 1:1 conduction. Patients suffering spontaneous AFL 1:1 had a significantly faster flutter rate compared to the drug-induced population.