試題詳解

2. 一位49歲男性，外傷後第三天出現尿量減少(350 mL/day)。腎臟超音波檢查: 腎臟大小無異常，也無水腎(hydronephrosis)。以下數據何者支持ATN (acute tubular necrosis)，而非腎前性急性腎損傷(pre-renal acute kidney injury)?
(A) BUN 78 mg/dL, creatinine 1.8 mg/dL
(B) Urine [Na] 41 mEq/L
(C) Urine osmolality 390 mosmol/L
(D) Plasma [Na] 140 mEq/L, plama [creatinine] 1.8 mg/dL, urine [Na] 28 mEq/L, urine [creatinine] 72 mg/dL
(E) urine sediment normal, occasional hyaline cast. No granular or brown cast