Table 2.

RIFLE criteria.

Risk	Increased SCr level × 1.5 or GFR decrease >25%
Injury	Increased SCr level × 2 or GFR decrease >50%
Failure	Increased SCr level × 3 or GFR decrease >75%
Loss	Persistent acute renal failure or loss of function >4 weeks
ESRD	ESRD >3 months

SCr: serum creatinine; GFR: glomerular filtration rate; ESRD: end-stage renal disease.

Bellomo et al.²¹

Assessment of SCr only and not GFR decrease was used in our study.