Predictive value of two different definitions of contrast-associated acute kidney injury for long-term major adverse kidney events in patients with ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention

Abstract

Background It remains controversial whether contrast-associated acute kidney injury (CA-AKI) is associated with long-term major adverse kidney events (MAKE) in patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI). Methods By the Acute Kidney Injury Network (AKIN) criteria, CA-AKI was defined as an increase in serum creatinine ≥ 0.3 mg/dL or 50% from baseline within 48 h after PCI; or an increase in serum creatinine ≥ 0.5 mg/dL or 25% within 72 h by the contrast-induced nephropathy (CIN) criteria. The primary endpoint was 1-year MAKE, defined as a composite of all-cause mortality and persistent renal dysfunction. Results A total of 402 patients were finally included in this study. The primary endpoint occurred in 29 (7.2%) patients. There was a significant association between CA-AKI and 1-year MAKE assessed by both the AKIN (hazard ratios [HR]: 11.58, 95% confidence interval [CI]: 4.29–31.24, p = 0.000) and CIN (HR: 6.45, 95% CI: 2.56–16.25, p = 0.000) definitions. However, the AKIN definition (HR: 4.95, 95% CI: 1.17–21.02, p = 0.030) was more reliable in the prediction of persistent renal dysfunction than CIN definition (HR: 4.08, 95% CI: 0.99–16.87, p = 0.052). Additionally, the area under receiver operating characteristic curve was larger for predicting 1-year MAKE with the AKIN definition than CIN definition (0.742 vs. 0.727). Conclusions In patients with STEMI undergoing primary PCI, CA-AKI was significantly associated with 1-year MAKE. Moreover, the AKIN definition might be more reliable in the prediction of long-term prognosis.

Frequency of Acute Kidney Injury in Patients Presenting with Acute ST-Elevation Myocardial Infarction and Its Relationship with In-Hospital Mortality

“…17 Cordero et al made similar observation in Spanish patients with ACS and reported the frequency of hypertension to be 68.5%. 18 AKI was developed in [23][24][25] We observed that frequency of in-hospital mortality was significantly higher in acute STEMI patients with AKI as compared to those without AKI (24.0% vs. 3.9%; p-value=0.004). When compared similar difference was noted in in-hospital mortality between acute STEMI patients with versus without AKI across various subgroups based on age, gender, BMI, diabetes, hypertension, smoking, ASA status, thrombolysis and need for PCI.…”