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Updated: Jan 8, 2026

07:57
An In Vitro Bladder Model of Catheter-Associated Urinary Tract Infection
Published on: June 24, 2025
988
尿が紫色になったとき:必ずしも尿路感染症とは限らない
Elisa Veigas1, João Lança Pereira1, Nidia Oliveira1
1Internal Medicine, Unidade Local de Saúde de Viseu Dão-Lafões, Viseu, PRT.
Cureus
|December 22, 2025
まとめ
紫尿バッグ症候群(PUBS)は、尿バッグに紫色の変色を引き起こす良性の状態です。細菌の代謝によって発生し、抗生物質ではなくカテーテルの管理によって解決されることがよくあります。
科学分野:
- 腎臓病学
- 老年医学
- 感染症学
背景:
- 紫尿バッグ症候群(PUBS)は、まれで視覚的に印象的な現象です。
- 通常、長期的な尿道カテーテル留置を受けている高齢で衰弱した患者に影響します。
- 懸念されるものの、PUBSは一般的に良性の状態です。
研究 の 目的:
- 末期腎不全の高齢患者におけるPUBSの症例を報告すること。
- PUBSの根本的なメカニズムを明らかにすること。
- 不必要な抗生物質の使用を避けるために、PUBSと尿路感染症(UTI)を区別することの重要性を強調すること。
主な方法:
- 尿道カテーテル留置中の血液透析を受けている89歳女性の症例報告。
- 尿の変色の臨床観察。
- カテーテル交換と腸管理の最適化に焦点を当てた管理。
主要な成果:
- 患者は尿収集システムの特徴的な紫色の変色を発症した。
- 尿道カテーテルの交換と腸管理の改善後、状態は自然に改善した。
- 抗生物質療法は行われず、患者は無症候性のままだった。
結論:
- PUBSは、トリプトファンからインドールおよびインジゴ顔料への細菌代謝によって生じます。
- 便秘と慢性的なコロニー形成はPUBSの発症を促進します。
- 臨床的認識と適切なカテーテル管理は、PUBSに対する不必要な抗生物質治療を防ぐための鍵となります。
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