title: [Effect of water immersion on indices of central hemodynamics in subjects older than 45 years].
abstract: The effect of 7-day dry immersion on central hemodynamics of four test subjects, aged 46, with boundary arterial hypertension was investigated. The controls were two healthy men, aged 24. Central hemodynamics was examined by integrated rheography. Variations in blood pressure, central venous pressure, stroke and cardiac indexes, heart rate and total peripheral resistance were measured. The control subjects showed a decrease of blood pressure during exposure (P less than 0.01). Two of the test subjects with a short history of boundary arterial hypertension displayed similar variations (P less than 0.01), whereas two others showed an increase of blood pressure during the immersion period (P less than 0.01). The test and control subjects did not exhibit significant differences in the stroke and cardiac indexes, heart rate, central venous pressure or total peripheral resistance: stroke and cardiac indexes decreased while central venous pressure and total peripheral resistance increased, and heart rate remained unchanged.
mesh_terms: D001794:Blood Pressure; D002496:Central Venous Pressure; D006339:Heart Rate; D006439:Hemodynamics; D006801:Humans; D007101:Immersion / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume; D014655:Vascular Resistance
vernacular_title: Vliianie vodnoĭ immersii na pokazateli tsentral'noĭ gemodinamiki u lits starshe 45 let.