Assessing glomerular filtration rate (GFR) in critically ill patients with acute kidney injury - true GFR versus urinary creatinine clearance and estimating equations

Table 3 Individual data on measured and estimated glomerular filtration rates (mL/min/1.73m²) in 30 critically ill patients

Patient	⁵¹Cr-EDTA	CrCl	MDRD	CKD-EPI		CG
					actual body weight	preop body weight	ideal body weight
1	39	39	34	35	37	37	34
2	40	31	27	27	29	29	27
3	41	31	29	28	34	35	28
4	76	37	40	40	36	36	39
5	26	49	35	36	50	51	36
6	56	23	41	41	34	34	38
7	42	34	31	31	34	34	34
8	45	46	31	32	39	39	33
9	41	48	25	24	31	30	26
10	27	28	20	19	23	23	19
11	41	29	27	27	31	31	29
12	74	46	46	47	54	54	46
13	47	38	40	41	47	49	42
14	49	12	32	31	35	33	30
15	76	108	50	53	53	53	52
16	36	16	23	22	23	23	21
17	88	57	47	49	55	55	48
18	78	75	40	41	47	47	38
19	40	80	35	36	44	43	45
20	45	43	32	32	35	36	33
21	27	15	14	13	16	16	15
22	33	43	22	21	24	24	21
23	74	43	62	71	72	72	67
24	60	64	49	49	50	50	46
25	35	33	26	26	35	35	23
26	31	71	37	38	45	44	40
27	29	58	51	49	47	46	40
28	28	31	40	42	43	40	45
29	27	70	38	38	36	37	35
30	60	34	39	42	50	52	48
Mean ±SEM	47 ±3	44 ±3	35 ±2	36 ±2	40 ±2	40 ±2	36 ±2

⁵¹Cr-EDTA, glomerular filtration rate measured with infusion clearance of ⁵¹Cr-EDTA; CG, estimated glomerular filtration rate with the Cockcroft Gault equation using actual, preoperative (preop) and preoperative ideal body weight; CKD-EPI, estimated glomerular filtration rate with the chronic Kidney Disease Epidemiology Collaboration equation; CrCl, estimated glomerular filtration rate measured with urinary creatinine clearance; MDRD, estimated glomerular filtration rate with the Modification of Diet in Renal Disease equation.

ISSN: 1364-8535