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尿路動態検査後の尿路感染症予測のためのノモグラムの開発と検証
Omri Schwarztuch Gildor1,2, Elad Yosef1,2, Netanel Levin1,2
1Department of Urology, Meir Medical Center, Kfar-Saba, Israel.
Neurourology and urodynamics
|February 3, 2026
まとめ
新しいノモグラムは、5つの一般的な変数を使用して、尿路動態検査(UDS)後の尿路感染症(UTI)を予測します。このツールは、リスクの低い患者の不要な抗菌薬の使用を減らす選択的な抗菌薬予防に役立ちます。
科学分野:
- 泌尿器科学
- 感染症疫学
背景:
- 尿路動態検査前の抗菌薬予防には、国際的なガイドラインのコンセンサスが欠けています。
- 尿路感染症(UTI)は、尿路動態検査(UDS)の潜在的な合併症です。
研究 の 目的:
- UDS後のUTIリスクを予測するノモグラムを開発および検証すること。
- 予測リスクに基づいた選択的な抗菌薬予防(AP)の臨床的純益を評価すること。
主な方法:
- UTI予測因子を特定するための多変量ロジスティック回帰。
- 5つの臨床変数を組み込んだ使いやすいノモグラムの開発。
- ROC-AUC、Brierスコア、キャリブレーション、および適合率-再現率AUCを使用したパフォーマンス評価。
- 臨床的純益を評価するための意思決定曲線分析。
主要な成果:
- ノモグラムには、水腎症、神経因性下部尿路機能障害、排尿後残尿量≥200 mL、年齢≥70歳、およびカテーテル使用が含まれます。
- ノモグラムは、妥当な識別度(ROC AUC 0.7086)と良好な全体的な精度(Brier 0.0180)を示しました。
- 意思決定曲線分析では、低い臨床閾値(<5%)での選択的APの正味の利益が示されました。
結論:
- シンプルで適切に校正されたノモグラムは、UDS後のUTIリスクの個別化された推定値を提供します。
- ノモグラムは、リスクの高い患者の標的APをサポートし、不要な抗菌薬の使用を減らす可能性があります。
- より広範な適用性のために外部検証が推奨されます。
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