KIDNEY FUNCTION DURING THE MYOCARDIAL INFARCTION WITH RECURRENT EPISODES OF ISCHEMIA IN YOUNG AND MIDDLE-AGED MEN

Abstract

Relevance. Changes in renal function and their significance in reinfarction and early postinfarction angina have not been insufficiently established. Aim. To evaluate renal function changes in men under 60 years old with recurrent myocardial infarction and early postinfarction angina to improve prevention and outcomes. Material and methods. The study included men aged 19-60 years old with type I myocardial infarction. Patients are divided into two age-comparable groups: I - the study group, with recurrent myocardial infarction and/or early postinfarction angina - 110 patients; II - control, without it - 555 patients. A comparative assessment of renal function changes in first 48 hours (1) and the end of third week disease (2), also risk analysis of recurrent ischemia and poor outcome in selected groups were performed. Results. The study group was distinguished by high levels of creatinine1 (0.11±0.03 (mmol/l)), lower - glomerular filtration rate (74.2±20.6 (ml/min/1.73 m2)) from the control (0.10±0.02 (mmol/l) and 78.3±17.9 (ml/min/1.73 m2), respectively; p=0.04). In both groups, there was a deterioration in indicators (creatinine, I: 2.3%; II: 5.9%; glomerular filtration rate - I: -5.8 and -6.3%, respectively; p<0.0001) during the observation period. The risk of recurrent ischemia increases with creatinine1 levels≥0.11 mmol/l and a glomerular filtration rate1˂70 ml/min/1.73 m2. In the study group, the risk of poor outcome is high with normal renal function. In the control group, it increased at creatinine1 levels≥0.10 mmol/l, glomerular filtration rate1˂65 ml/min/1.73 m2. Conclusions. Patients with recurrent ischemia have higher creatinine levels than controls. In both groups, during the study, there was a slight increase in creatinine and a decrease in glomerular filtration rate. The above values of renal function indices should be used in the formation of groups at high risk of early recurrence of ischemia and poor outcomes, as well as for predictive modeling of these complications.