Cavotricuspid Isthmus Conduction Split by Pouch-Like Recesses During Typical Atrial Flutter

Yasushi Oginosawa; Akihiko Nogami; Kenji Kurosaki; Aiko Sugiyasu; Shoichi Kubota; Shinya Kowase; Tetsuo Yamasaki; Shiho Takada; Jun Suzuki; Mihoko Sakamaki; Hajime Aoki; Kazuhiko Yumoto; Toshiyuki Tamaki; Kenichi Kato

doi:10.1253/circj.CJ-07-1038

Case Reports

Cavotricuspid Isthmus Conduction Split by Pouch-Like Recesses During Typical Atrial Flutter

Yasushi Oginosawa, Akihiko Nogami, Kenji Kurosaki, Aiko Sugiyasu, Shoichi Kubota, Shinya Kowase, Tetsuo Yamasaki, Shiho Takada, Jun Suzuki, Mihoko Sakamaki, Hajime Aoki, Kazuhiko Yumoto, Toshiyuki Tamaki, Kenichi Kato

著者情報

キーワード: Atrial flutter, Catheter ablation, Cavotricuspid isthmus, Double potential, Pouch-like recess

ジャーナルフリー

2009 年 73 巻 1 号 p. 179-182

DOI https://doi.org/10.1253/circj.CJ-07-1038

View "Advance Publication" version (November 11, 2008).

詳細

抄録

A 58-year-old man had typical cavotricuspid-isthmus-dependent atrial flutter (AFL). Right atrial angiography and multidetector computed tomography revealed a deep pouch-like recess in the mid-isthmus region. Linear ablation from the pouch to the edge of the inferior vena cava resulted in widely split double potentials without any change in the AFL cycle length. This observation suggested that the pouch played an electrophysiological role by dividing the flutter wavefront into 2 parallel conduction wave fronts through both sides of the pouch along the isthmus during typical AFL. When a widely split potential is created on 1 side of the pouch, the other side of the pouch should be targeted. (Circ J 2009; 73: 179 - 182)

責任著者(Corresponding author)

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