ヒトにおける電気誘発性心房動中の単極心房電図の構成
K T Konings1, J L Smeets, O C Penn
1Department of Physiology, Cardiology and Cardiopulmonary Surgery, Cardiovascular Research Institute Maastricht, Maastricht University, The Netherlands.
Circulation
|March 4, 1997
まとめ
心房細動 (AF) の電図パターンは,根本的な活性化パターンを明らかにします. この分析は,AFのタイプを区別し,伝導障害を特定するのに役立ちます.
科学分野:
- 心臓電気生理学 心臓電気生理学
- 心房細動の研究
- 心臓病学の信号分析
背景:
- 心房細動 (AF) は,複数の小波によって複雑な,ダイナミックな心房活性化を伴う.
- エレクトログラム構成と空間活性化との関係を理解することは極めて重要です.
研究 の 目的:
- AF電図形態の時間的な変化を空間的活性化パターンと相関させる.
- AFの特徴化における電図パターンの診断価値を調査する.
主な方法:
- 25人のウォルフ・パーキンソン・ホワイト患者の右心房自由壁のマッピング.
- 単極電図の分類は,単極,短双極,長双極,断片的電位という4つのカテゴリーに分けられます.
- エレクトログラムの比率とその伝導パターンとの相関の分析.
主要な成果:
- 電子図形は,急速な均一伝導 (単一ポテンシャル,PPV 0.96),衝突 (ショートダブル,PPV 0.33),伝導ブロック (ロングダブル,PPV 0.84),および遅い伝導 (断片化,PPV 0.87) を示した.
- ロングダブルおよびフラグメンテッドポテンシャルの割合は,AF型 (I,II,III) により増加した.
- 右心房では,二重または断片的ポテンシャルのための特定の解剖学的部位は特定されなかった.
結論:
- AF中の単一単極電図形態は,特定の伝導パターンを反映しています.
- エレクトログラム分析はAFのタイプを区別し,慢性AFを永続させる構造的伝導障害のある領域を特定することができます.
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