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内視鏡切除術における溶液評価のためのブタを用いた実験モデル
Annita Cavalcante Farias Leoncio1, Carlos Kiyoshi Furuya1, Christiano Makoto Sakai1
1Department of Gastrointestinal Endoscopy Unit, Oswaldo Cruz German Hospital, São Paulo, Brazil.
iGIE : innovation, investigation and insights
|February 6, 2026
まとめ
マンニトールと塩化ナトリウムの溶液は、内視鏡的切除術における粘膜下注入において良好な結果をもたらします。マンニトール20%と0.9%塩化ナトリウム(Ma-Na90)は優れた持続時間と泡立ちを示し、マンニトール10%と0.45%塩化ナトリウム(Ma-Na45)はより高い電気抵抗を示しました。
科学分野:
- 消化器病学; 内視鏡的処置; 生体材料科学
背景:
- 粘膜下注入は、内視鏡的切除術において穿孔を防ぐためのクッションを作成するために重要です。; 注入液の選択は、泡の耐久性、手技の容易さ、および安全性に影響を与えます。; 異なる溶液の評価は、内視鏡的切除術の技術を最適化するために不可欠です。
研究 の 目的:
- 粘膜下注入液の耐久性、内視鏡医による知覚品質、および電気抵抗を比較すること。; 内視鏡的粘膜下層剥離術(ESD)手技に最適な溶液を特定すること。
主な方法:
- 二重盲検試験により、Blue Eye、ボルベン(ヒドロキシエチルデンプン6%)、10%マンニトール/0.45% NaCl(Ma-Na45)、および20%マンニトール/0.9% NaCl(Ma-Na90)を比較しました。; フェーズ1:ブタの胃前庭部への生体内注入。; フェーズ2:2人の内視鏡医による内視鏡的切除術の実施。; フェーズ3:純粋な溶液および摘出胃組織における電気抵抗の測定。
主要な成果:
- Ma-Na90は最も長い持続時間(28分)を示し、Ma-Na45は最も短かった(10分)。; Ma-Na45は満足のいく評価でしたが、ボルベンは満足のいく評価ではありませんでした。; Ma-Na90は最も多くの泡を生成しました。; Ma-Na45は最も高い電気抵抗(溶液で89.62Ω、組織で391Ω)を示しました。; Ma-Na90は低い抵抗(溶液で23Ω、組織で55.75Ω)でした。; 穿孔は発生しませんでした。
結論:
- 最適な粘膜下注入液の選択には、耐久性や電気的特性などの複数の要因のバランスを取ることが含まれます。; マンニトールと塩化ナトリウムの溶液は、全体的に良好な結果と入手可能性を示しました。; Ma-Na90とMa-Na45は明確な利点を示しており、手技の必要性に応じた調整された使用が示唆されます。
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