Atrioventricular Node Reentrant Tachycardia in Patients with a Prolonged AH Interval during Sinus Rhythm: Clinical Features, Electrophysiologic Characteristics and Results of Radiofrequency Ablation

Shih Huang Lee, Shih Ann Chen, Ching Tai Tai, Chern En Chiang, Zu Chi Wen, Yi Jen Chen, Wen Chung Yu, Ann Ning Fong, Jin Long Huang, Jun Jack Cheng, Mau Song Chang

Research output: Contribution to journalArticle

8 Citations (Scopus)


Among a consecutive series of 600 patients who underwent radiofrequency catheter ablation for AV node reentrant tachycardia, 14 patients (age 29-76 years) had a prolonged AH interval during sinus rhythm (172±18 ms, range 140 to 200). Seven of them had unsuccessful ablation during the previous ablation sessions. Eight patients with anterograde dual AV node pathway physiology received anterograde slow pathway ablation, and the other 6 patients without dual-pathway physiology received retrograde fast pathway ablation. All patients had successful elimination of AV nodal reentrant tachycardia after a mean of 4±4 radiofrequency applications, power level 36±6 watts and a pulse duration of 42±4 seconds. The postablation AH interval remained unchanged. During a follow-up period of 25±13 months, one patient who received slow pathway ablation developed 2:1 AV block with syncope. As compared with the other 586 patients without a prolonged AH interval, these 14 patients had significantly poorer anterograde AV nodal function and lower incidence of anterograde dual AV node physiology (P

Original languageEnglish
Pages (from-to)305-310
Number of pages6
JournalJournal of Interventional Cardiac Electrophysiology
Issue number4
Publication statusPublished - 1997
Externally publishedYes



  • AH interval
  • Atrioventricular node reentrant tachycardia
  • Radiofrequency ablation

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this