Aim. Diabetes mellitus (DM) is known to be a risk factor in adverse outcomes and complications in many infectious diseases. In the combination of hemorrhagic fever with renal syndrome (HFRS) and DM there are mutually exclusive pathogenetic States - hyperosmolarity, characteristic of DM is layered on the reduction of osmotic blood pressure in HFRS. Under these conditions, the effect of one disease (DM) on the clinical manifestations of another (HFRS) is not obvious. The aim of the work is to find out the clinical features during hfps in patients with DM. Materials and methods. The study is based on the results of the retrospective studies "case - control" - studied the information contained in medical records of patient (form 003/u), who suffered HFRS in 2006-2018. The Selection of cards produced randomly. In the end, there were formed two groups: the first - 981 patient who suffered HFRS and had no signs of diabetes; the second, 33 patients who suffered HFRS on the background of previously existing (28 people), or the first identified (5) diabetes. Results. With a combination of HFRS and DM, a mild course of the disease is 2.5 times more common, there are no severe forms. Among this group of patients, complications are almost 10 times less common, less likely to develop infectious - toxic shock, acute kidney damage (class F by RIFLE), pulmonary edema. The combination of DM and HFRS is manifested by less high and prolonged fever, less high levels of urea and creatinine in the blood. Conclusion. HFRS in combination with DM is easier, apparently, high osmolarity of the blood is a stabilizing factor during the disease.

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Aim. To study the morpho-functional parameters of the heart in convalescents of hemorrhagic fever with renal syndrome (HFRS) using echocardiography.Material and methods. The study included 27 patients without any chronic diseases who had severe or moderate HFRS (the main group) within 3 weeks after their discharge from the infection diseases hospital. The reference group consisted of 19 patients comparable by age and gender, without any chronic diseases. Transthoracic echocardiography was the basic method of heart and hemodynamics investigation. The test was performed using tissue Doppler and non-Doppler assessment of left ventricle systolic deformation method (speckle-tracking method).Results. Violation of longitudinal systolic deformation of the left ventricle was observed in 15 (55.6%) patients, which was combined with diastolic left ventricle filling by the type of relaxation violation in 8 (29.6%) cases. Mitral valve insufficiency of 1 degree was identified in 11 (40.7%) HFRS patients, insufficiency of the tricuspid valve of 1 degree was identified in 4 (14.8%) patients. Pericardial effusion was detected in 2 (7.4%) patients. In 7 (25.9%) patients in the first 3 weeks after discharge from the hospital, additional floating echoes were detected on the leaves and fibrous ring of the aortic valve, which were considered as a manifestation of thromboendocarditis.Conclusion. Further investigation is necessary to assess the prognostic value (including the risk of thromboembolic complication developing) of the changes revealed in HFRS convalescents and to support the inclusion of echocardiography in the examination program during dispensary observation of HFRS-convalescents.