Current aspects of stable ischemic heart disease. ISСHEMIA study: breakthrough or constant optimism in approaches to treatment. Myocardial ischemia in non-obstructive coronary arteries (INOCA)

Abstract

Approaches to stable coronary artery disease (CАD) treatment have been subject to debate for a long time. One of the first and fundamental studies in stable coronary artery disease patients treatment is the COURAGE study, which showed the advantage of rational drug therapy in comparison with percutaneous intervention in such patients. However, CAD high prevalence with medical and social significance cause the need for future development of relationship between conservative and invasive approaches in the problem of this disease treatment. It was particularly the focus of recently completed multicentre ISCHEMIA trail. The aim of review is to analyze the available data on the management of stable coronary artery disease patients based on the ISCHEMIA study data. Results. In the largest multicenter randomized clinical trial ISCHEMIA, the primary outcome (cardiovascular death, myocardial infarction, cardiac arrest with effective resuscitation, hospitalization due to heart failure) rate was 13.3% in the routine invasive strategy group and 15.5% in the conservative strategy group (p = 0.34). The main secondary outcome rate also does not differ between groups significantly. Quality of life in the non-invasive group was higher only in those patients who had angina at baseline. Study subanalysis demonstrated that left coronary artery borderline stenosis accompanied by a poor prognosis, and an invasive strategy improves angina symptoms. Also, low density lipoprotein cholesterol target values achievement predictors were determined. In addition, women, participated in ISCHEMIA study had more frequent angina episodes, regardless less extensive coronary artery damage, and less severe ischemia manifestations than men. Among stable CAD accompanied moderate to severe ischemia and severe chronic kidney disease patients, no evidence initial invasive strategy, compared initial conservative strategy, in relation of death or non-fatal myocardial infarction risk reduction was found. Conclusion: ISCHEMIA trial data demonstrated necessity more carefully stable coronary artery disease patients selection for invasive treatment, taking into account angina pectoris severity and modern antianginal therapy possibilities.

Keywords

• coronary artery disease
• non-obstructive coronary artery disease
• isсhemia study