Analysis of the outcomes of myocardial infarction against the background of chronic obstructive pulmonary disease among residents of the Astrakhan region

Abstract

Objective. To analyse the course of coronary heart disease within a year after the development of myocardial infarction in residents of Astrakhan region with chronic obstructive pulmonary disease.   Materials and Methods. We examined 325 patients with myocardial infarction, residents of Astrakhan region. 195 patients had heart attacks against the background of COPD and 130 patients without COPD. During 12-month follow-up 30 people dropped out - 19 in the group of patients with myocardial infarction against COPD, 11 in the group of patients with myocardial infarction without COPD. Correspondingly, by the end of the observation period the number of patients under observation was: 176 - in the group of patients with myocardial infarction against COPD, and 119 - in the group of patients with myocardial infarction without COPD.   Results. It was found that in patients with myocardial infarction against COPD the annual mortality from conditions associated with cardiovascular pathology was twice as frequent as in patients with MI without COPD. There was also a tendency to more frequent development of recurrent myocardial infarction. In the structure of mortality in patients with myocardial infarction against COPD and without COPD and there was a tendency to a more frequent occurrence of acute heart failure expressed stages (Killip III-IV) and decompensation of chronic heart failure as causes of mortality. The odds of developing a combined endpoint, including recurrent myocardial infarction, stroke and mortality from cardiac causes, among patients with myocardial infarction against COPD were 2.7 times higher compared to patients with myocardial infarction without COPD. The combined endpoint, which combines clinically significant events in patients with myocardial infarction, makes the existing differences in the outcomes of infarction in patients with and without COPD evident.