心肺バイパス手術中のアプロチニンとヘパリンモニタリング
1Department of Research Haematology, Harefield Hospital, Middlesex, England.
Circulation
|November 1, 1992
まとめ
高用量のアプロチニンは,ヘパリンとは無関係に活性化凝固時間 (ACT) と活性化部分血栓プラスティン時間 (APTT) を延長します. 心肺バイパス中にアプロチニンを使用する場合は,ACTを750秒以上維持し,正確なヘパリンモニタリングを行う.
科学分野:
- アネステシオロジー アネステシオロジー
- 心血管外科手術についてです.
- 血液学 ヘマトロジ
背景:
- 心肺バイパス (CPB) 中の高用量アプロチニンの使用は,活性凝固時間 (ACT) を延長することができます.
- ACTは,CPB中にヘパリニゼーションをモニタリングするための重要なパラメータです.
- ACTのモニタリングに対するアプロチニンの影響は,安全なCPB手順の明確化を必要とする.
研究 の 目的:
- CPB中にアプロチニンが投与される場合,ACT経由でヘパリンレベルをモニタリングするためのガイドラインを確立する.
- 凝固検査におけるアプロチニンの独立した効果を調査する.
主な方法:
- アプロチニンは,健康な対照群およびCPB患者からのヘパリン化血液サンプルに添加されました.
- 活性化凝固時間 (ACT) と活性化部分血栓形成時間 (APTT) を測定した.
- プロトロンビン時間 (PT) は,アプロチニンの特異性を決定するために評価されました.
主要な成果:
- アプロチニンは,ACTとAPTTの投与量依存の延長を示した.
- この効果は,活性化剤またはヘパリンの存在に関係なく観察されました.
- アプロチニンはプロトロンビン時間 (PT) に影響しませんでした.
結論:
- アプロチニンは,ヘパリンの抗凝固作用とは独立して,ACTとAPTTを延長します.
- 高用量のアプロチニンのCPB中に適切なヘパリン化を確保するために,ACT値は750秒を超えなければなりません.
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