The Heart Damage and Its Structural State Features in Men Under 60 Years Old With Myocardial Infarction, Complicated With Acute Kidney Injury

Abstract

Relevance. The role of hemodynamic changes in myocardial infarction complicated by acute kidney injury is interpreted in different ways. Aim. To evaluate the heart chambers and structures peculiarities in men under 60 years old with myocardial infarction complicated by acute kidney injury to improve prevention and outcomes. Material and methods. The study included men 19-60 years old with type I myocardial infarction. The patients were divided into two age-comparable groups: I - study group, with acute kidney injury - 25 patients; II - control, without it - 366 patients. A comparative assessment of the heart chambers and structures parameters in the first 48 hours (1) and at the end of the third week of the disease (2), their dynamics, also acute kidney injury development risk analysis (ANOVA) were performed. Results. The study group differed from the control group in smaller sizes of the left atrium2 (38.1±6.0 and 42.0±5.4 (mm), respectively; p=0.01), a higher frequency of the middle anterior (100 and 15.6%; p=0.02) and antero-septal (100 and 17.7; p=0.04) segments akinesia and the absence (0 and 81.5%; p=0.04) of tricuspid regurgitation. In the study group, there was a smaller increase in the ventricles size than in the control group (left: 0.6 and 1.7%, respectively; right: 15.3 and 33.6%) and a greater decrease in the atria size, compared in the control group (left: -1.8 and -25.3%; right: -25.3 and -0.1%) (p<0.0001). The risk markers of the acute kidney injury developing were the dimensions of the left atrium1˂34 mm, interventricular septum≥12.0 mm, end systolic1≥4.23 and diastolic1≥5.3 of the left ventricle, right ventricle1˂2.6; of the right atrium1≥4.7 (cm), the mass of the left ventricle1≥328.8 g. Conclusions. Men under 60 years old with acute kidney injury in myocardial infarction are characterized by lesions of the middle anterior and antero-septal segments, the absence of tricuspid regurgitation, and a smaller left atrium in the subacute period of the disease. The above of the heart chambers dimensions values should be used in the high-risk groups for the acute kidney injury development formation, as well as for prognostic modeling.