The Incidence and Risk Factors of Acute Kidney Disease after Total Knee Arthroplasty with Early Postoperative Volume Supplement

Table 1

RIFLE criteria [15].

AKI	Creatinine increase	GFR decreased	Urine output
Risk	1.5 times	>25	<0.5ml/kg/hr x 6hr
Injury	2 times	>50	<0.5ml/kg/hr x 12hr
Failure	3 times	>75	<0.5ml/kg/hr x 24hr or anuria x 12hr
Loss	Persistent ARF > 4 weeks
ESRD	End stage