Evaluation of Four eGFR Calculating Formulae in Predicting Postoperative Acute Kidney Injury in Adult Patients Undergoing Open-Heart Surgery with Cardiopulmonary Bypass

Table 1

Estimated glomerular filtration rate (eGFR) calculation formulae.

Name	Formula
CG	[140 − A (year old)] × W (kg)/[72 × 0.0113 × Scr (umol/L)] × 0.85 (F)
BSA corrected CG	186 × [Scr (umol/L) × 0.0113]^−1.154 × A (year old)^−0.203 × 0.742 (F)
CKD-EPI	141 × Min (Cr/k,1)^a − 1.209 × 0.993^A (F × 1.108), k = 0.9 (M)/0.7 (F), A = −0.411 (M)/−0.329 (F)
Simplified MDRD	186 × [Scr (umol/L) × 0.0113]^−1.154 × A (year old)^−0.203 × 0.742 (F)

CG, cockcroft gault; BSA, body surface area; CKD-EPI, chronic kidney disease-epidemiology collaboration; MDRD, modification of diet in renal disease; A, age; W, weight; H, height; F, female; M, male. BSA (m²) = 0.007184 × W (kg) 0.425 × H (cm) 0.725.