title: [Blood circulation in healthy persons in the arid region of Turkmenia. I. Studies in the supine and orthostatic positions].
abstract: The active orthostatic test was used to investigate 164 normal male residents of Ashkhabad during the cool season, 143 in summer and 66 during the transition period, i. e. first hot summer days. During the cool season, the pattern and markedness of orthostatic circulatory shifts in Ashkhabad residents were similar to those observed in moderate climate. In summer, orthostatic drop in systolic BP, cardiac index and circulating blood volume is more pronounced as compared to values of the cool season, while the rise in heart rate and diastolic BP is less pronounced. Orthostatic shifts are the most marked in the first hot days of summer: systolic BP, stroke and cardiac indices drop considerably, whereas diastolic BP and peripheral resistance to blood flow remain unchanged or slightly increase, with heart rate showing the most marked rise.
mesh_terms: D000328:Adult; D001775:Blood Circulation; D001794:Blood Pressure; D002302:Cardiac Output; D003889:Desert Climate; D006339:Heart Rate; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D011187:Posture; D012621:Seasons; D014423:Turkmenistan; D014655:Vascular Resistance
vernacular_title: Krovoobrashchenie u zdorovykh liudeĭ v usloviiakh aridnoĭ zony Turkmenii. Soobshchenie I. Issledovanie v gorizontal'nom i ortostaticheskom polozhenii.