Background: Although prediabetes increases AMI risk, long-term clinical implication for prevalent prediabetes in AMI patients is not clear. The present study aimed to evaluate whether prediabetes at admission increases long-term cardiovascular (CV) and total mortalities in AMI patients who were discharged alive.
Methods: We obtained AMI patient data from The Korea Acute Myocardial Infarction Registry-National Institutes of Health (KAMIR-NIH) registry. Total and CV mortalities at 12 months after AMI were assessed.
Results: A total of 13104 patients with AMI from the registry database were analyzed. 552 patients (4.2%) were destined to in-hospital mortality or hopeless discharge. We classified the remaining patients into control, prediabetes, and diabetes groups according to one of fallowing parameters: prevalent diabetes by past history, diabetes medication during hospitalization, or in the remaining cases with no diabetes history or medication data by hemoglobin A1c level at admission. Patients without any data about above-mentioned parameters were excluded in this study (n= 3583), and a total of 8969 AMI patients were available for analysis (control group, n=2379; prediabetes group, n=2321; and diabetes, n=4269). After adjustment for multiple factors, hazard ratios (HRs) (95% CI) for total mortality in prediabetic group vs. control group and diabetic group vs. control group were 1.536 (0.879-2.685, p=0.132) and 1.94 (1.184-3.190), p<0.01), respectively. However, CV mortality were not different between the three groups.
Conclusions: Our results show that that prediabetic state at AMI admission do not increase CV mortality and all-cause mortalities at 1-year after survival discharge, whereas diabetes increase 1-year all-cause mortality.
I. Park: None. D. Lee: None. S. Yu: None. K. Lee: None.