Table 2.

Renal outcomes and hyperkalemia findings according to RAS blockers usage

Variables	Time from surgery	RAS blocker (+) n = 308	RAS blocker (-) n = 272	P
Renal adaptation, %	Discharge	69.0 ± 10.3	68.0 ± 11.5	0.260
	1 mo	67.1 ± 10.7	66.8 ± 11.6	0.711
Acute kidney injury, n (%)	1 mo	12 (3.9)	14 (5.8)	0.467
ESKD (1000 PY)	3 yrs	1.4	9.8	0.037
Hyperkalemia	Discharge	6/308 (1.9)	7/272 (2.6)	0.612
	1 mo	7/308 (2.3)	10/272 (3.7)	0.317
	6 mo	8/234 (3.4)	7/212 (3.3)	0.945
	12 mo	5/216 (2.3)	6/183 (3.3)	0.558

eGFR, estimated glomerular filtration rate; ESKD, end-stage kidney disease; PY, person-years.

Continuous variables are described as mean ± SD, and categorical variables are presented as counts (percentages). Renal adaptation was defined as (post-nephrectomy eGFR/pre-nephrectomy eGFR) × 100. Acute kidney injury was defined as an increase in serum creatinine level by >0.3 mg/dl or by >1.5 times compared to serum creatinine levels at discharge. The incidence of ESKD was defined when patients started dialysis. Hyperkalemia was defined as a serum potassium level > 5.5 mmol/l.