Atypical atrial flutter: Clinical features, electrophysiological characteristics and response to radiofrequency catheter ablation

Research output: Contribution to journalArticle

Abstract

Aims. To evaluate the clinical and electrophysiological features of atypical atrial flutter (AAF) and its response to radiofrequency catheter ablation. Methods and Results. In 90 consecutive patients referred for sustained atrial flutter, bipolar recordings were obtained from the tricuspid annulus, coronary sinus, interatrial septum and left atrium. AAF was defined by the absence of concealed entrainment from the inferior vena cava - tricuspid annulus isthmus. Target sites were identified by early, fragmented or double potentials and by concealed entrainment. Linear lesions were created between target sites and nearby anatomical barriers in a temperature-controlled mode: 20 episodes of AAFs were documented in 19/90 (21%) patients. Mitral valve disease and surgery were significantly more frequent in patients with AAF. Target sites were identified in the right atrial free wall (n=8), interatrial septum (n=6), left atrium (n=4) and coronary sinus (n=2). Effective ablation was obtained in 15/19 patients (79%). After a 15.7 ± 10.7 month follow-up, AAF recurred in 0/15 patients with a successful and 3/4 (75%) with a failed procedure (P

Original languageEnglish
Pages (from-to)241-253
Number of pages13
JournalEuropace
Volume4
Issue number3
DOIs
Publication statusPublished - Jul 2002

Keywords

  • Atypical atrial flutter
  • Electrophysiological study
  • Intracardiac mapping
  • Radiofrequency ablation

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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