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

Table 3

Risk factors associated with postoperative AKD after early volume replacement.

Continuous variable	AKD	Non-AKD ( = 443)	Logistic regression
	( = 15)		Univariate		Multivariate
			Odds ratio	P value	Odds ratio	95% CI	P value
Age (years)	75.33±7.02	70.35±6.84	1.12	.006	1.09	1.008-1.187	.031
BMI (kg/m^2)	28.48±5.16	28.29±4.63	1.01	.875
Preop. Cr (mg/dL)	0.80±0.28	0.86±0.31	0.53	.521
Preop. eGFR (mL/min/1.73m^2)	83.40±36.41	77.60±24.21	1.01	.369
Preop. Hb (g/dL)	12.38±1.50	12.87±1.32	0.76	.157
OP time (min)	87.60±15.82	87.56±15.64	1.00	.993
Length of stay (days)	3.8±0.94	3.40±0.69	1.79	.036
Estimated blood loss (mL)	851.50±381.35	885.04±325.93	1.00	.696
Nominal variable
Gender (M/F)
Female	13	364	0.72	.667
Male	2	79
ASA			0.52	.197
1		7
2	7	272
3	8	163
4		1
Anesthesia
Spinal	2	104	1.99	.369
General	13	339
CKD
Yes	4	99	1.26	.694
No	11	344
Diabetes
Yes	6	129	1.62	.368
No	9	314
Hypertension
Yes	11	317	1.09	.881
No	4	126
CAD
Yes	5	38	5.33	.004	3.63	1.102-11.935	.034
No	10	405
Transfusion rate
Yes	3	36	2.83	.120
No	12	407

Preop.: preoperative.
Cr: creatinine.
eGFR: estimated glomerular filtration rate.
Hb: hemoglobin.
OP time: operative time.
CKD: chronic kidney disease; AKD: acute kidney disease.
CAD: coronary artery disease.