心停止患者におけるNIRSを用いた脳血流推定:ROSC転帰との相関
Soo Hyun Choi1, Dong-Hyun Jang2, In Young Kim3
1Department of Biomedical Engineering, Hanyang University, Seoul, Republic of Korea.
Resuscitation
|January 31, 2026
まとめ
院外心停止(OHCA)患者の心肺蘇生(CPR)中、平均動脈圧(MAP)を60mmHg以上に維持することは、特に自発循環再開(ROSC)を達成した患者において、脳血流(CBF)を改善する可能性がある。
科学分野:
- 循環器病学
- 神経学
- 救急医学
背景:
- 院外心停止(OHCA)は生命を脅かす緊急事態である。
- 神経学的回復のためには、CPR中の脳血流(CBF)の最適化が不可欠である。
- CPR中のMAPとCBFの正確な関係は、依然として完全には理解されていない。
研究 の 目的:
- CPR中のMAPレベルとCBFの関連性をOHCA患者で調査すること。
- 蘇生処置中のCBFを最適化する特定のMAP閾値を決定すること。
- ROSCを達成した患者と達成しなかった患者の間で、MAPに対するCBFの反応性を比較すること。
主な方法:
- CPRを受けている成人OHCA患者の後ろ向き観察研究。
- MAPの侵襲的動脈モニタリングおよび推定CBFのための近赤外分光法(NIRS)。
- MAPは20mmHg間隔(0-20、20-40、40-60、60-80mmHg)に層別化された。
- ピアソン相関および線形回帰分析が用いられた。
主要な成果:
- ROSC群および非ROSC群ともに、60mmHg未満のMAPに対するCBFの反応性は限定的であった。
- ROSCを達成した患者に限り、MAPとCBFの間に有意な正の相関が観察された(p < 0.001)。
- 線形回帰分析により、ROSC群ではMAP値が高い(≥60mmHg)ほどCBFの増加が急峻であることが示された。
結論:
- CPR中のMAPのCBFへの影響は圧依存性であり、MAPが60mmHg以上で顕著な正の相関が現れた。
- この正の相関はROSCを達成した患者に特異的であり、予後特異的な利益の可能性を示唆している。
- CPR中のMAPを60mmHg以上に維持することは、特に短期的な予後が良いOHCA患者において、脳灌流を高めるための実行可能な戦略である可能性がある。
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