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Quantitative Autonomic Testing
Published on: July 19, 2011
ヴァソヴァガル・シンコープに先立つ心臓呼吸器動態の複合的な解調
L A Lipsitz1, J Hayano, S Sakata
1Hebrew Rehabilitation Center for Aged Research and Training Institute, Department of Medicine, Harvard Medical School, Boston, Mass 02131, USA. Lipsitz@mail.hrca.harvard.edu
Circulation
|September 16, 1998
まとめ
ヴァソヴァガル・シンコープは,呼吸が増加し,昏倒する前に突然のヴァガル・トーンが上昇することを含む複雑な自律的変化を伴う. これは,心臓呼吸器の解離が心拍の急激な低下に先行し,昏睡を引き起こすことを示唆しています.
科学分野:
- 心臓病学 心臓病学
- 自律神経科学とは
- 呼吸器生理学 呼吸器生理学について
背景:
- 静脈筋 (Vasovagal syncope) での自律神経系の役割は完全に理解されていません.
- 静脈筋梗塞は,血圧と心拍数の突然の低下を特徴とする一般的な状態です.
研究 の 目的:
- 傾斜誘発性静脈筋梗塞に先行するダイナミックな自律的プロセスを調査するために.
- 健康な個体における昏睡前の心臓呼吸器の変動の変化を分析する.
主な方法:
- 呼吸,R-R区間,および頭上傾き中の動脈圧の変動性を評価するために,複合的な解調が使用されました.
- コヘレンスとトランスファー機能の分析では,呼吸とR-R区間の変動性との関係を調べました.
- 昏睡した25人の健康な被験者と25人の対照群を研究した.
主要な成果:
- 失眠した被験者は,失眠3分前に潮の体積が増加し,血圧が低下した.
- 陰道音調の急激な上昇 (R-R間隔の延長,変動性の増加) は,昏睡の90秒前に発生しました.
- 心臓呼吸器の分離が観察され,呼吸器とR-R間隔の変動の相関性が低下した.
結論:
- 静脈筋梗塞は,呼吸不全と心呼吸器分離が先行する.
- 心血管トーンが急激に上昇し,それに続くブラディカルディアが急激にシンコープを引き起こします.
- 呼吸器系の変化は,突然のブラジカルディアが発生するまで,初期にプレロードの減少を相殺する可能性があります.
関連する概念動画
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CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
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