Main Article Content
Objective: Serum creatinine (SCr) is not a sensitive and reliable index for the early diagnosis of acute kidney injury caused by
contrast-induced nephropathy (CIN). The aim of this study was to explore the values of serum neutrophil gelatinase-associated
lipocalin (NGAL) and cystatin C (Cys-C) after percutaneous coronary intervention (PCI) for the early diagnosis of CIN.
Methods: Three hundred patients receiving PCI from January 2018 to December 2020 were assigned to a CIN group (n=25)
and a non-CIN group (n=275), respectively. SCr, Cys-C and NGAL levels were measured, and their sensitivities for early CIN
diagnosis were evaluated by the area under the receiver operating characteristic curve (AUC) values.
Results: The NGAL and Cys-C levels of the CIN group began to rise 6 and 12 h after operation, respectively (P<0.05). The
CIN group had higher NGAL and Cys-C levels than those of the non-CIN group 12, 24 and 48 h after operation (P<0.05). The
AUC values of NGAL, Cys-C and SCr 24 h after operation were 0.885, 0.874 and 0.856, respectively.
Conclusion: The serum NGAL and Cys-C levels of patients after PCI reflect the early changes of renal function, which are
valuable for early CIN diagnosis.
Keywords: Contrast; cystatin C; nephropathy; neutrophil gelatinase-associated lipocalin; percutaneous coronary intervention.