Endpoint definitions and follow-up
ACUTE KIDNEY INJURY
The primary endpoint was the difference in lactate levels from preprocedural levels at 72 h after coronary angiography. Secondary endpoints included CA-AKI, M-ALA, and all-cause mortality. CA-AKI was defined according to the Acute Kidney Injury Network criteria as an increase by ≥ 50% or ≥ 0.3 mg/dl within 72 h after coronary angiography compared to pre-coronary angiography serum creatinine [