CHRONIC KIDNEY DISEASE OF CARDIAC PATIENTS
The aim of the study was to evaluate the functional state of the kidneys in patients with cardiological profile. Material and methods: a retrospective analysis of 208 case histories of patients discharged from the 1st and 2<sup>nd</sup> cardiological departments of the State Budgetary Healthcare Institution Regional Kaliningrad Clinical Hospital was conducted, 110 of them (53%) were men and 98 (47%) were women. The average age of the patients was 63 (56.0, 71.0) years. To evaluate the kidney function, a calculation method for determining GFR using the formula CKD-EPI in ml/min/1.73 m<sup>2</sup> was used. Results: It was revealed that more than a third of cardiological patients without diagnosed kidney diseases have signs of renal dysfunction in the form of CKD 1-3 stages. CKD stage 3 was relatively more common in patients with arrhythmias on the background of organic myocardial lesions. The functional state of the kidneys worsens with an increase in functional class angina pectoris and CHF; all patients with CHF III-IV FC included in the study had signs of CKD 2-3 stages. The statistical dependence of the functional state of the kidneys on the presence / stage of hypertension, the presence of IHD, type 2 diabetes mellitus and dyslipidemia was not revealed.