The incidence of diabetes is on a boom in the world. Coronary heart disease is the most common macrovascular complications of diabetes. Strict control of blood glucose levels contribute to the betterment of the patient and reduce the cost of treatment. The aim is to show the influence and significance of diabetes in the five-year outcomes in patients who underwent percutaneous coronary intervention Initially in the study included 800 patients who underwent percutaneous coronary angioplasty index. After the indexing procedure clinical monitoring is completed for 720 patients (90%) whose data after the completion of the follow-up period subjected to statistical analysis, which included descriptive statistics, a mutual comparison of the examined groups were used methods for testing the significance of differences numeric-factor analysis of variance (ANOVA) student’s t test, rank sum test (Mann-Whitney U test) hi-square test. They were monitored and analyzed the parameters of cardiac status obtained on outpatient examinations, and data obtained by telephone contact with the patient. Patients involved in the study had a very good glycoregulation, therefore there were no statistically significant differences in the five-year outcomes after percutaneous coronary intervention. The study showed approximately equal distribution of the sexes patients who are suffering from diabetes, those with diabetes mellitus type 1 patients with type 2 diabetes. There is no significance in survival, no matter what the patient is suffering from diabetes, has no significance because of the small number of deaths. It is similar to myocardial infarction, no statistically significant differences between patients with diabetes and patients who do not suffer from diabetes in terms of myocardial infarction.

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