中心気道疾患に対する液体窒素スプレー凍結療法(SCT):多施設共同前向き登録研究
Robert F Browning1, Ashutosh W Sachdeva2, Scott C Parrish3
1Walter Reed National Military Medical Center, Bethesda, MD, USA.
Journal of thoracic disease
|January 12, 2026
まとめ
スプレー凍結療法(SCT)は、中心気道疾患に対する安全な気管支鏡的ツールです。本研究では、SCTが
科学分野:
- 肺医学; インターベンショナル肺医学; 内視鏡検査手技
背景:
- スプレー凍結療法(SCT)は、非接触フラッシュ凍結法(-196°C)を利用します。SCTの安全な使用には、窒素ガスの効果的な換気が必要です。気管支鏡検査におけるSCTの実施に関する前向きデータは限られています。
研究 の 目的:
- trūFreeze SCTシステムの安全性、線量測定、および臨床転帰を評価すること。良性および悪性の中心気道疾患を有する患者におけるSCTを評価すること。SCTの使用に関する前向きデータを多施設共同登録で収集すること。
主な方法:
- 4つの施設(2013-2021年)における前向き観察登録。SCTを受けた64人の患者(悪性47人、良性17人)を登録しました。安全性、治療された疾患、線量測定、および有効性に関するデータを収集しました。
主要な成果:
- 114件のSCT処置と472サイクルの凍結/融解サイクルが実施されました。SCTは30%の症例で気管支内出血を治療し、91%の成功率でした。関連死1例と無症候性気胸1例を含む、有害事象は最小限でした。
結論:
- スプレー凍結療法は、中心気道介入に対して安全です。SCTは、組織治療のための独自のフラッシュ凍結能力を提供します。さまざまな病状におけるSCTの役割を定義するには、さらなる対照研究が必要です。
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