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Updated: Feb 6, 2026

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BEST-CLI試験における血行再建術の比較転帰と年齢の関係:スプラインモデル解析
Mahmoud B Malas1, Mohammed Hamouda1, Alik Farber2
1Division of Vascular & Endovascular Surgery, Department of Surgery, UC San Diego (UCSD), La Jolla, CA.
Journal of vascular surgery
|February 4, 2026
まとめ
重症虚血肢(CLTI)に対し、伏在静脈グラフト(SSGSV)を用いたバイパス手術は、72歳までは血管内治療(ET)よりも良好な転帰をもたらす。この年齢を超えると、特に代替バイパスコンジットを使用した場合には、転帰は同様になる。
科学分野:
- 血管外科、インターベンショナル心臓病学、健康成果研究
背景:
- 年齢は、重症虚血肢(CLTI)の管理における重要な要因である。以前の研究では、治療決定のために恣意的な年齢カットオフが使用されていた。BEST-CLI試験は、開腹術と血管内治療(ET)を比較するためのエビデンスに基づいた年齢閾値を確立することを目的とした。
研究 の 目的:
- CLTI患者における開腹バイパスとETの転帰を差別化するためのエビデンスに基づいた年齢カットオフを決定すること。異なる血行再建戦略の有効性に対する年齢の調整効果を分析すること。
主な方法:
- バイパスまたはETを受けた1,780人の患者のBEST-CLI試験データセットを使用した。年齢が転帰に及ぼす影響をモデル化するために、制限立方スプラインを使用した。主要切断、死亡率、主要有害肢イベント(MALE)、およびMALE/死亡を含む転帰を評価した。
主要な成果:
- SSGSVを用いたバイパスとETの比較において、MALE/死亡ハザードは72歳までSSGSVで低かった。切断リスクは57歳までSSGSVで低かった。MALEリスクは83歳まで低かった。代替バイパスコンジットを使用した場合は、ETと比較して転帰に有意な年齢関連の違いは観察されなかった。
結論:
- SSGSVを用いたバイパスは、72歳までのETと比較して、MALEフリー生存率が優れていることを示した。ETは83歳までの患者において、MALEリスクが高いことと関連していた。代替コンジットを用いたバイパスとCLTIのETの選択において、年齢は影響しないようである。
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