Persistent tachycardia within isolated pulmonary veins during atrial fibrillation ablation

Kenichiro Yamagata, Atsushi Doi, Hiro Kawata, Hisaki Makimoto, Teruki Yokoyama, Yuko Inoue, Hideo Okamura, Takashi Noda, Wataru Shimizu, Naohiko Aihara, Takayuki Maki, Shiro Kamakura, Kengo Kusano, Kazuhiro Satomi

Research output: Contribution to journalArticlepeer-review


During circumferential pulmonary vein (PV) isolation for ongoing atrial fibrillation (AF), distinguishing passive conduction to the pulmonary vein (PV) from rapid PV arrhythmia in the isolated PV is difficult. Hence, the purpose of this study is to investigate both the feasibility of distinguishing the PV tachycardia after circumferential PV isolation and the electrophysiological characteristics of these tachycardia. Among 178 consecutive patients who underwent circumferential PV isolation during ongoing AF, fibrillatory PV converted to a regular cycle length PV tachycardia independent of the atrial rhythm (=independent PV tachycardia) in 13 PVs among 12 (7%) patients. We classified independent PV tachycardia according to 3 different atrial rhythms: sinus rhythm (type 1, n = 2), atrial tachycardia (type 2, n = 4), and AF (type 3, n = 6). independent PV tachycardia was observed in 3 right PV and 10 left PV (P = 0.0864). There were 10 mappable independent PV tachycardia, in which 8 were focal and 2 were macroreentrant tachycardia. i-PVT can be diagnosed in a small number of patients who underwent circumferential PV isolation during AF. The main mechanism or independent PV tachycardia was focal tachycardia mainly in the left PV.

Original languageEnglish
Pages (from-to)1006-1012
Number of pages7
JournalHeart and Vessels
Issue number8
Publication statusPublished - 2017 Aug 1
Externally publishedYes


  • Atrial tachycardia
  • Catheter ablation
  • Clinical electrophysiology
  • Double tachycardia
  • Pulmonary vein tachycardia

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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