人間におけるダブル・ループ・イントラアトリアル再エントリー
1Department de Rhythmologie, Hôpital Cardiologique du Haut-Lévêque, Bordeaux-Pessac, France.
Circulation
|February 15, 2000
まとめ
これまでに説明されていない二重ループの心房再突入性短心症は,心房隔膜欠陥手術後の患者に観察されました. 1つのループを切除すると,心拍数が変化し,完全な解消のために2回目の切除が必要になりました.
科学分野:
- 心臓病学 心臓病学
- 電気生理学 電気生理学
- 心臓外科手術について
背景:
- ダブルループの心房再突入性心拍動症は,臨床的に記述されていません.
- 抗薬性心房不全症の患者,心房隔膜欠陥閉塞後の心房不全症を研究した.
研究 の 目的:
- デュアルループの心房再突入性心拍動脈を記述し,特徴づけること.
- これらの心拍動脈症の電気生理学的メカニズムと消去戦略を調査する.
主な方法:
- 5人の患者で多極性カテーテルと3次元の電気解剖学マッピング (Biosense) を利用しました.
- 特定されたリエントラントループの最も狭い部分をターゲットとした線形放射性アブレーションを実行しました.
主要な成果:
- サイクルの長さは262±40msの6つのフィギュア-8のダブルループの心拍動脈がマッピングされました.
- 1つのループ (cavotricuspid isthmus) の切除により,低心拍が単一ループの不律症に変化し,第二回の切除が必要になりました.
- 19±6ヶ月の平均フォローアップ後,再発は観察されなかった.
結論:
- 図8 ダブル・ループ・タヒカルディアは,手術後の心房断裂後の一般的な心房振動を模倣することができる.
- 1つのループの切除により,新しい心拍動脈が発生し,別の静脈管で2度目の切除が必要になります.
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