小児における膀胱造影の適応症。形態学的異常および機能的欠陥
Víctor M García Nieto1, María Candelaria Darias Martin2, Teresa Moraleda Mesa3
1Sección de Nefrología Pediátrica, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Tenerife, Spain.
Anales de pediatria
|February 24, 2026
まとめ
基本的な腎機能検査は、尿路感染症(UTI)後の子供が膀胱造影を必要とするかどうかを判断するのに役立ちます。最大尿浸透圧(UOsm)は、UTIの既往のない子供における重度の膀胱尿管逆流(VUR)の除外に有用です。
科学分野:
- 小児腎臓病学; 診断画像; 泌尿器科学
背景:
- 膀胱造影および尿道造影は、最初のUTI後に標準的でしたが、適応症は現在臨床的です。超音波検査は、尿路異常の評価に広く使用されています。腎機能検査は、小児における膀胱造影の適応症を絞り込む可能性があります。
研究 の 目的:
- 小児患者における膀胱造影の決定を導く上での基本的な腎機能検査の役割を評価すること。腎機能検査の膀胱尿管逆流(VUR)同定における診断精度を評価すること。
主な方法:
- UTIまたは形態学的異常の超音波検査を受けた175人の子供を対象とした横断研究。最大尿浸透圧(UOsm)、および尿中アルブミン/クレアチニンおよびNAG/クレアチニン比を評価しました。骨盤径に基づいて顕著な形態学的異常(SMA)を定義しました。
主要な成果:
- 膀胱尿管逆流(VUR)は57人の子供に見られ、56.1%がSMAを有し、75%が異常なUOsmを示しました。「UTI +顕著なSMA」は、VURに対して89%の陰性予測値を示しました。「SMAまたは最大UOsmの低下」を組み合わせることで、すべての重度のVUR(グレードIV-V)症例を予測できました。
結論:
- UTIおよびSMAを有する小児では、膀胱造影前に最大UOsm検査は不要な場合があります。最大UOsmは、UTIの既往のない子供における重度のVURの除外に価値があります。腎尿細管機能検査は、臨床および超音波データとともに、膀胱造影の適応症を最適化できます。
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