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Clinical-anamnestic, laboratory-instrumental, structural and functional peculiarities of older age patients 6 months after myocardial infarction

Acute myocardial infarction is one of the most studied diseases, however, despite many clinical studies, elderly patients remain an unexplored group of patients, since they are often a criterion for exclusion from clinical trials.Paper reveals clinical-anamnestic, laboratory-instrumental, structural and functional characteristics of patients, as well as the peculiarities of an increase in the concentration of markers of myocardial fibrosis in older age groups who have undergone acute coronary syndrome with ST-segment elevation, 6 months after underwent revascularization by percutaneous coronary intervention are considered. Data obtained from our own prospective, open, controlled study which lasted from the onset of myocardial infarction to 6 months after. Тhe text provides the characteristic features of patients of older age groups, their distinctive characteristics from middle-aged patients, and also explains these features based on the data obtained in the study. The paper also presents the results of the concentration of markers of myocardial damage (MMP-9), and the difference in the increase between elderly patients and younger groups is proved. The study proved a decrease in heart rate in middle-aged and elderly patients by 20–25 %, and an increase by 1.2 % in elderly patients 6 months after myocardial infarction. Regardless of the age of the patients, there is a deterioration in renal function due to an increase in blood creatinine concentration by 15–25 % (p < 0,05), which is associated with hypoperfusion of blood flow through the renal tissue due to a decrease in cardiac output. In middle-aged and elderly patients, an improvement in the systolic function of the left ventricular myocardium was determined due to an increase in the ejection fraction by 5–6 % to the values of the relative intact ejection fraction (50–60 %), however, in elderly patients there is no increase in the ejection fraction, which remains at the values borderline values (40–50 %) (p < 0,05). The preservation of high concentrations of MMP-9 in elderly patients 6 months after a heart attack was determined, exceeding the reference values by 50 %, with normalization in middle-aged and elderly patients (p < 0,05). All of the above indicates the need for an individual approach to the prescribed drug therapy, further treatment tactics in elderly patients, which indicates the need for an individual approach to prescribed drug therapy, further treatment tactics in elderly patients.

DOI: 10.52575/2687-0940-2021-44-3-332-342
Number of views: 874 (view statistics)
Number of downloads: 622
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