Incidence, Severity, and Outcomes of Acute Kidney Injury in Octogenarians following Heart Valve Replacement Surgery

Table 2

AKI occurrence and severity in CKD and non-CKD patients.

Baseline CKD status	All	CKD	Non-CKD	value
Presurgery s.Cr, mg/dL	1.24 (0.30)	1.70 ± 0.31	1.15 ± 0.20	<0.0001
Presurgery eGFR	49.8 (12.8)	34.3 ± 10.0	52.8 ± 11.0	<0.0001
Calculated CKD stage
CKD Stage 1	0	0	0
CKD Stage 2	45 (21.5)	1 (2.9)	44 (25.1)	0.004
CKD Stage 3a	93 (44.5)	4 (11.8)	89 (50.9)	<0.0001
CKD Stage 3b	57 (27.3)	17 (50.0)	40 (22.9)	0.0011
CKD Stage 4	14 (6.7)	12 (35.3)	2 (1.1)	<0.0001
CKD Stage 5	0	0	0
Total AKI number (%)	98 (46.8)	26 (76.5)	72 (41.1)	0.0002
Stage 1	75 (76.5)	17 (65.4)	58 (80.6)	0.0001
Stage 2	9 (9.2)	2 (7.7)	7 (9.7)
Stage 3	14 (14.3)	7 (26.9)^a	7 (9.7)^b

^a7 of 7 in CKD and ^b6 of 7 in non-CKD required dialysis.
Stratified by eGFR instead of physician’s diagnosis of CKD.