自動デフィブリレーション中の中断された前心臓圧縮の有害な結果
Ting Yu1, Max Harry Weil, Wanchun Tang
1Institute of Critical Care Medicine, Palm Springs, Calif 92262-5309, USA.
Circulation
|July 18, 2002
まとめ
自動外部除細動器 (AED) は,胸部圧縮の際の一時停止を必要とします. デフィブリレーション前に15秒以上心臓肺蘇生 (CPR) を中断すると,蘇生成功が著しく低下し,心臓の機能が悪化します.
科学分野:
- 心臓病学 心臓病学
- 緊急医療 緊急医療
- 医療機器 医療機器について
背景:
- 自動外動除細動器 (AED) は,リズム分析と充電のために,胸部圧縮の中断を必要とします.
- これらの中断が蘇生結果に与える影響は,十分に理解されていません.
研究 の 目的:
- 自動外部除細動器 (AED) 操作中の胸部圧縮中断が蘇生結果に与える影響を評価する.
主な方法:
- 豚では心房細動が誘発され,その後心肺蘇生 (CPR) と除細動の試みが行われました.
- 胸部圧迫は,ショックを受ける前に,さまざまな期間 (3,10,15,20秒) にわたって中断された.
- 蘇生成功,冠動脈 perfusion pressure,および蘇生後の心臓機能が評価されました.
主要な成果:
- 蘇生は<15秒間の間隔を持つ動物では成功したが,>15秒間の間隔を持つ動物では成功しなかった.
- より長い中断期間は,CPR介入時間の増加と蘇生成功の減少と相関しています.
- 休止期間は,冠動脈 perfusion 圧力と,蘇生後の心臓機能の悪化と反転的に関係していました.
結論:
- デフィブリレーションの前に15秒を超える胸部圧迫の中断は,心肺蘇生の結果を損なう.
- 長期にわたる中断は,蘇生後の心筋機能不全の重症性を高めます.
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