下肢血管造影スコアリングシステムに関連する臨床転帰:システマティックレビュー
Thomas J Lyons1, Nanthesh Kiruparan2, Muhammed Ahmed3
1Department of Vascular Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK; University of Birmingham, Birmingham, UK.
Annals of vascular surgery
|January 16, 2026
まとめ
GLASS、TASC、Bollingerなどの血管造影スコアリングシステムは、慢性虚血性下肢重症度(CLTI)の予後予測においてエビデンスが限定的である。GLASSスコアは血管内治療の結果に影響を与える可能性があるが、バイパス手術におけるその役割は不明である。
科学分野:
- 血管外科、インターベンショナルラジオロジー、臨床転帰研究
背景:
- 慢性虚血性下肢重症度(CLTI)は、高い死亡率および肢喪失率を伴う。現在のガイドラインでは、CLTIの重症度評価のために血管造影スコアリングシステム(例:GLASS、TASC、Bollinger)を推奨している。これらのスコアリングシステムの臨床転帰に対する予測値の裏付けとなるエビデンスは限定的である。
研究 の 目的:
- 血管造影スコアリングシステム(GLASS、TASC、Bollinger)が慢性虚血性下肢重症度(CLTI)の臨床転帰を予測する能力に関するエビデンスを系統的にレビューすること。これらのスコアリングシステムの予後予測性能を異なる治療群で評価すること。
主な方法:
- Ovid MEDLINE、Embase、およびCochrane Library(1977-2025)の系統的レビュー。下肢の血管造影をGLASS、TASC、またはBollingerを用いて評価し、臨床転帰を報告した研究が含まれた。エンドポイントの異質性のため、ナラティブ合成を実施した。
主要な成果:
- 8件の研究が含まれた(GLASS 5件、TASC 2件、Bollinger 1件)。GLASSスコアは、血管内治療群における全生存率、切断回避生存率、および肢救済率と混合的な関連を示したが、バイパス群では関連は認められなかった。TASCおよびBollingerスコアは、臨床転帰との一貫した関連を示さなかった。
結論:
- 血管造影スコアリングシステムがCLTIの転帰を予測するというエビデンスは乏しく、質も低い。GLASSスコアは血管内治療において予後予測価値を持つ可能性があるが、バイパス手術における有用性は不明である。今後の研究では、足関節下病変、側副血行、および前向き検証を含めるべきである。
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