ランダム化された冠動脈外科研究における生存と心筋梗塞の10年間の追跡調査
E L Alderman1, M G Bourassa, L S Cohen
1Stanford University, California.
Circulation
|November 1, 1990
まとめ
The Coronary Artery Surgery Studyは,10年後の冠動脈疾患の医療治療と外科治療の間で,全生存率の違いが見つかりませんでした. しかし,手術は,エジェクション分数が減少した患者の生存率を改善しました.
科学分野:
- 心臓病学 心臓病学
- 心血管外科手術についてです.
- クリニック・トライアル 臨床試験
背景:
- 冠動脈疾患の管理には,医療療法と手術による再血管化は含まれます.
- 冠動脈外科研究 (CASS) は,これらの戦略を比較することを目的とした.
- 長期的なアウトカムや患者のサブグループについては,さらなる調査が必要である.
研究 の 目的:
- 冠動脈疾患の初期医療対外科治療の10年生存と罹患率を比較するために.
- 特定の治療戦略から恩恵を受ける可能性のある患者のサブグループを特定する.
主な方法:
- 780人の患者が参加したランダム化対照試験.
- 初期医療療法と冠動脈バイパス移植手術の比較.
- 累積生存率と非致死性心筋梗塞からの自由を評価する10年間の追跡調査.
主要な成果:
- 医療 (79%) と外科 (82%) グループ間の10年累積生存率は有意な差異はありません.
- 死亡率と非致死性心筋梗塞率の有意な差は認められませんでした (医療的69% vs. 外科的66%).
- 射出分数<0.50の患者は,最初の手術で生存率が改善された (61%対79%,p=0.01).
- 射出分数>=0.50の患者は,医療療法によるイベントからの自由度が高くなった (75%対68%,p=0.04).
結論:
- 初期手術による治療は,左心室機能不全の患者にとって,長期的な生存の利点を提供します.
- 軽度の安定性アンギナと正常な左心室機能を有する患者の場合,初期医学療法により,初期手術と同等の生存率が得られます.
- 治療戦略は,個々の患者の特徴,特に左心房機能を考慮する必要があります.
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