ハイパルトニックマニトールとイソプロテレノールが,右心室内皮切除術後の地域冠動脈の流れに及ぼす影響
Circulation
|July 1, 1976
まとめ
右心室内分泌手術は冠動脈の血流を減少させました. ハイパルトニックマニトール注入は,イソプロテレノールとは異なり,切開周辺領域への血流を大幅に増加させ,その潜在的な治療効果を示唆しました.
科学分野:
- 心血管生理学 心血管の生理学
- 心筋パルフュージョン (Myocardial Perfusion) について
背景:
- 右心室内静脈切開は,地域の冠動脈の血流に影響を与える可能性があります.
- 心筋 perfusion を回復させるための介入を理解することは極めて重要です.
研究 の 目的:
- 右心室切開が地域冠動脈の血流に及ぼす影響を調査する.
- ハイパルトニックマニトールとイソプロテレノールの注入が,静脈切開後の冠動脈の流れに与える影響を評価する.
主な方法:
- 地域冠動脈血流は,胸開きで麻酔を受けた犬の放射性マイクロスフィアを使用して測定されました.
- 動物は,ハイパートニックマニトールまたは塩分溶液のいずれかを投与し,その後,イソプロテレノール注入を受けた.
- 血圧,心拍数,心電量を含む血液動力学的パラメータをモニタリングした.
主要な成果:
- 右心室切開手術により,冠動脈の流動が切開周辺領域に著しく減少しました.
- ハイパートニックマニトール注入は,外傷間冠動脈の流れを34%増加させた.
- イソプロテレノール注入は,この領域への冠動脈の流れを有意に変化させず,大動脈圧の有意な低下を引き起こしました.
結論:
- 垂直静脈切開術は,隣接する心筋への血流を減少させます.
- ハイパルトニックマニトール注入は,静脈切開術後の近近切開領域への冠動脈の流れを効果的に増加させます.
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