[Cardiac arrhythmias in exposure to +Gz loads after immersion].
The frequency and pattern of cardiac arrhythmias were studied during an exposure to acceleration +3 Gz for 5 min before and after 3- and 13-day dry immersion. Following immersion the frequency of extrasystolic arrhythmias increased four-fold and more severe arrhythmias--group and systemic extrasystoles--developed as compared with control exposures. The following factors--increased in the parasympathetic tone, disorders in the systemic and regional circulation and fluid-electrolyte balance--seemed to be mainly responsible for distrubed regulation of the cardiovasucular rhythm during a post-immersion exposure to acceleration.
D000328:Adult; D001145:Arrhythmias, Cardiac / Q000209:etiology* / Q000503:physiopathology; D005117:Cardiac Complexes, Premature / Q000503:physiopathology; D004562:Electrocardiography; D006112:Gravitation; D006801:Humans; D007101:Immersion / Q000503:physiopathology*; D008297:Male; D013997:Time Factors; D014893:Weightlessness
Aritmii serdtsa pri vozdeĭstvii peregruzok +Gz posle immersii.