HEART RATE CONTROL AND DIASTOLIC FUNCTION IN PATIENTS WITH PRESERVED SYSTOLIC FUNCTION OF THE LEFT VENTRICLE AFTER SURGICAL REVASCULARIZATION
About the author:
Maharramova L. I.
CLINICAL AND EXPERIMENTAL MEDICINE
Type of article:
Despite the use of conservative, invasive and surgical treatment methods, the inability to effectively manage the course of cardiovascular diseases (CVD) is still an urgent problem of modern medicine. Aim. To study the effect of heart rate control and surgical revascularization on diastolic function in patients with type 2 diabetes with preserved left ventricular systolic function. Methods. The study included 122 patients diagnosed with coronary artery disease who received comprehensive treatment. The diagnosis of coronary artery disease was confirmed on the basis of anamnesis, complaints, objective and instrumental methods of research. Among the instrumental methods of research selective coronarography occupied the main role. All patients underwent coronary artery bypass grafting (CABG). The studied patients were divided into two groups: 1st group 1 – 52 patients with coronary artery disease CHD without diabetes; 2nd group – 70 patients with coronary artery disease CHD and type 2 diabetes. From the 52 patients without diabetes, 29 patients received β-blockers (metoprolol 12.5-25 mg twice a day) and 23 patients a specific selective If-channel inhibitor – ivabradine (5-7.5 mg twice a day). From the 70 patients with diabetes, 32 patients received β-blockers (metoprolol 12.5-25 mg twice a day) аnd 38 patients ivabradine (5-7.5 mg twice a day). Results. Left ventricular diastolic dysfunction (LVDD) (85.7%) are more common in patients with type 2 diabetes than in patients without diabetes (65.3%). The results of echocardiographic studies performed at different stages of surgical revascularization showed that LVDD was partially reversible in both groups. Conclusion. Revascularization leads to a decrease in the degree of DD, to reduce the number of patients with LVDD and does not depend on the drugs selected for heart rate control.
cardiovascular diseases, heart rate, diastolic function, type 2 diabetes, ivabradine, β-blockers, surgical revascularization.
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Publication of the article:
«Bulletin of problems biology and medicine» Issue 1 (155), 2020 year, 151-155 pages, index UDK 616.12-005