急性腎不全の鑑別 第3回埼玉内科専門医会 埼玉医科大学腎臓内科 岡田浩一 急性腎不全の鑑別 第3回埼玉内科専門医会 埼玉医科大学腎臓内科 岡田浩一 * E. Needham: Management of Acute Renal Failure Am Family Physician 72:1739-1746, 2005 *FENa Prerenal <1%, Intrarenal >1% BUN to Cr ratio Prerenal >20:1 Intrarenal 10 to 20:1 Urine specific gravity Prerenal >1.020 Intrarenal 1.010 to 1.020 Urine osmolality Prerenal >500 Intrarenal 300 to 500 Urine Na concentration Prerenal < 10 Intrarenal >20 Urine sediment Prerenal Hyaline cast Intrarenal Granular cast