Long-Term Clinical Outcome according to Changes of Glomerular Filtration Rate in AMI Patients with Multivessel Disease after Percutaneous Coronary Intervention

Glomerular filtration rate (GFR) is an important indicator of renal failure. However, regarding delta GFR in acute myocardial infarction (AMI) is rare. In this study, it was examined whether the delta GFR had an adverse effect on outcomes in patients with AMI and multivessel disease (MVD). Among 13,105 consecutive patients enrolled in the Korea Acute Myocardial Infarction–National Institute of Health registry, 2619 with AMI and MVD who underwent percutaneous cardiac intervention (PCI) were assigned to the better delta GFR (group I, n=1432 [54.7%]) or worse delta GFR (group II, n=1187 [45.3%]) groups and followed for 3 or more years. The mean age of group I was lower than that of group II (62.64±11.52 years vs. 64.29±11.64 years; p<0.001). On multivariate analysis, delta GFR (hazard ratio, 1.50; 95% confidence interval, 1.05-2.13; p=0.024) was a negative risk factor for adverse cardiac events. Age over 65 years (p<0.001), history of MI (p=0.008), low hemoglobin (p<0.001), high triglyceride (p=0.008), low high-density lipoprotein cholesterol (p=0.002), and low left ventricular ejection fraction (LVEF) (p<0.001) were prognostic factors for major adverse cardiac events (MACE). In patients with a GFR <60 mL/min/1.73 m(2), mortality was increased by 0.9% in the multivessel PCI group and 0.7% in the IRA-only PCI group at the 1-year follow-up. According to the 3-year clinical follow-up analysis, prognosis was better in better delta GFR patients with AMI and MVD who underwent PCI than in worse delta GFR patients.