Acute renal dysfunction in patients with alcoholic hepatitis

Table 2 Urinalysis findings in various etiologies of acute kidney injury

AKI type		UA	Urine sodium (mEq/L)	FENA	BUN:Creatinine ratio
Pre-renal		Normal or hyaline casts	< 20	< 1	≥ 20:1
Intrinsic renal
	ATN	Muddy brown casts	> 40	≥ 1
	GN	Dysmorphic RBC and RBC casts	< 20	< 1
	AIN	WBC casts and eosinophils	> 20	≥ 1
Post-renal		Normal or hematuria	>20	Variable	≥ 20:1

ATN: Acute tubular necrosis; GN: Glomerulonephritis; AIN: Acute interstitial nephritis; RBC: Red blood cells; WBC: White blood cells; FENA: Fractional excretion of sodium.