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Updated: Oct 5, 2026

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Robotic Ablation of Atrial Fibrillation
Published on: May 29, 2015
緩やかな経路のアブレーションの前と後の心房細動中の心房回数. 自律的封鎖とベータアドレナジック刺激の効果
S A Strickberger1, R Weiss, E G Daoud
1Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor 48109, USA.
Circulation
|September 1, 1996
まとめ
ゆっくり経路のアブレーションは,自律的阻害による心房細動の間に心房のペースを効果的に遅らせます. しかし,同情刺激中に心拍数を有意に変化させないため,それだけではすべての臨床的結果を説明できないことを示しています.
科学分野:
- 心臓病学 心臓病学
- 電気生理学 電気生理学
- 医療機器 医療機器について
背景:
- ラジオ周波数カテーテルアブレーションは,心房細動における心室速度を管理するために使用されます.
- 遅い経路のアブレーションは,この速度制御のための提案されたメカニズムです.
- このメカニズムを理解するために,心房節再突入性低心率 (AVNRT) 患者の研究が行われています.
研究 の 目的:
- 動脈動中の心房率にゆっくり経路の消去が与える影響を調査する.
- 自律的封鎖と同情的刺激の条件下でこの効果を評価する.
- 遅い経路のアブレーションだけでは,心房動の管理における臨床観察を説明できるかどうかを判断する.
主な方法:
- AVNRTを患った35人の患者は,ゆっくりとした経路による放射性アブレーションを受けた.
- 患者は2つのグループに分けられ,自律的阻害 (プロプラノロールとアトロピン) とイソプロテレノール注入でした.
- 静脈循環の長さを測定するために,アブレーション前と後に心房細動が誘発されました.
主要な成果:
- 自律的封鎖下では,アブレーションが延長された中 (448 vs 525 ms) と最大 (640 vs 798 ms) の心室循環長 (P < .01,P = .04).
- 最低の心室循環の長さは,自律的封鎖 (P = .05) の間に有意な変化を示さなかった.
- イソプロテレノール注入中に,中,最大,または最小の心室循環の長さの有意な変化は,アブレーション後の観察されませんでした (P > .2).
結論:
- ゆっくり経路のアブレーションは,自律的封鎖中の心房細動において心房率を低下させます.
- このアブレーションテクニックは,交感刺激中に心室速度に影響を与えない.
- ゆっくり経路のアブレーションだけでは,心房動における放射線周波数修正の観察された臨床有効性を説明するのに不十分です.
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