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Aim: To study renal dysfunction in patients with myocardial infarction (MI)., Subjects and Methods: 670 case histories of patients diagnosed with acute coronary syndrome, including 369 (55.8%) men and 292 (44.2%) women at the age of 33 to 85 years (mean age 64.8 +/- 11.7 years), were retrospectively studied. The authors considered comorbidities and analyzed complaints, history data, and the results of physical examinations, biochemical blood tests for plasma glucose, troponin, MB fractions of creatine phosphokinase and creatinine, and cholesterol in all the patients. Instrumental studies involved electro- and echocardiography. Glomerular filtration rate (GFR) was estimated using the MDRD formula. The patients were divided into groups according to GFR values: 1) > 90 ml/min/1.73 m2; 2) 60 to 89 ml/min/1.73 m2; 3) 30 to 59 ml/min/1.73 m2; 4) less than 30 ml/min/1.73 m2., Results: Most patients were found to have a moderate or significant reduction in kidney function. Worsening renal function in patients with MI was associated with advanced patient age, the lower proportion of men in the patient structure, the higher prevalence of concomitant cardiovascular diseases, such as arterial hypertension, chronic heart failure, and prior MI, and diabetes mellitus., Conclusion: The findings suggest that kidney dysfunction is of essential value in developing the multiplicity of comorbidities in patients with MI. The wide introduction of a GFR calculating method in daily medical practice will be able to adequately and timely identify renal filtration function and to make a correction into a treatment regimen, thus decreasing the number of poor outcomes.

A study was made of the vegetative parameters associated with the cardiac rhythm and central hemodynamics in 60 patients with myocardial infarction. In 45 patients the time course of the urinary excretion of catecholamines was examined. Regulation of cardiovascular system in patients with myocardial infarction in different time spells of the disease course was studied in relation to the particular features of the clinical picture and presence of complications.

Clinical and experimental studies showed a high therapeutic activity of L-DOPA in combination with traditional methods of infarction treatment. L-DOPA promoted a rapid disappearance of heart failure symptoms and accelerated reparative processes by restoring the activity of the sympathetic nervous system. Correctness of the experimentally developed basically new scheme for administration of neurotropic drugs to patients with infarction depending on the disease stage has been validated.

A total of 230 patients admitted to Moscow city hospitals were examined to study the diagnostic value of a kit "Diagnosticum for the detection of erythrocytic myoglobin, dry". Myocardial infarction was diagnosed in 165 of them: in 138 it was transmural, in 27 intramural and in 65 the diagnosis was not confirmed (they were entered into the control group). Myoglobinuria was detected on the 1st day of transmural MI in 95%, on the 2nd day in 92% and on the 3rd day in 82%. In patients with intramural MI myoglobinuria was noted in 72% of the cases. In the control group the test was false positive in 9%.

A solid-phase immunoassay was developed for quantitative estimation of myoglobin in human biological fluids. This technique was used for analyses of blood serum and plasma from patients with acute myocardium infarction. The method developed was similar to radioimmunoassay by its diagnostic characteristics but more simple and available. The immunoassay might be used in diagnosis of myocardium infarction as well as in estimation of the disease severity at least in clinics.