腎不全患者の排泄経路を考慮して,カスタマイズされたガドリニウムベースのコントラスト剤プロトコルの安全性

Jeong Woo Kim1, Chang Hee Lee1, Gang-Jee Ko2

  • 1Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul 08380, Republic of Korea.

PubMed

背景/目的:排泄経路および投与されたガドリニウム用量を考慮し、当施設では、ガドリニウムのより迅速な排泄を促進し、残留を最小限に抑えるために、腎機能障害患者向けの個別化されたガドリニウム基造影剤(GBCA)投与プロトコルを策定しました。本研究の目的は、この施設内プロトコルの8年間にわたる臨床成績および安全性を評価することです。方法:この単一施設レトロスペクティブ研究では、2015年1月から2022年12月の間にGBCA増強MRIを施行した腎機能障害患者を対象とした。プロトコルでは、慢性腎臓病(CKD)ステージおよび血清ビリルビン値に基づいた特定のGBCAの使用と投与量の調整を推奨していた。血清ビリルビン値が正常な例には、二重排泄経路を持つガドキセテートナトリウムが使用され、血清ビリルビン値が上昇している例にはマクロ環状造影剤が使用された。追跡期間中、腎原性全身性線維症(NSF)の発症および脳組織におけるガドリニウム沈着の有無を評価した。結果:合計288名の患者(年齢 64.6 ± 11.7 歳、男性 64.9%)に対し、施設プロトコルに従って716回のGBCA造影MRI検査を実施した。コホートには、CKDステージ4の患者62名と、CKDステージ5または血液透析中の患者131名が含まれていた。CKDステージ4および5の患者、ならびに血液透析中の患者において、597回の検査にガドセテート二ナトリウムを用い、119回の検査にマクロ環状造影剤を用いた。平均追跡期間はそれぞれ27.5ヶ月および27.8ヶ月であり、NSFまたは脳組織へのガドリニウム沈着の症例は認められなかった。結論:排泄経路と投与されたガドリニウム量を考慮した個別に調整されたGBCA投与プロトコルは、腎機能障害のある患者においてNSFに関して安全であると考えられ、評価された患者のサブセットにおいて脳内ガドリニウム蓄積の証拠は認められなかった。

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