[Interrelationship between pulse filling of earlobe vessels and cardiac extrasystole during "head--foot" loading following exposure to simulated weightlessness].
The relationship between changes in the pulse blood filling of earlobe vessels and cardiac arrhythmias was studied in 91 manned experiments during which test subjects were exposed to simulated weightlessness and then to acceleration of +3 Gz for 5 min in a 7.25 m arm centrifuge. The studies demonstrated that the vascular type of functional decompensation may transform into the cardiac type in normal men during recovery from an exposure to +3 Gz and simulated weightlessness. This may be of theoretical and practical importance for space programs.
D000328:Adult; D001794:Blood Pressure; D005117:Cardiac Complexes, Premature / Q000209:etiology; D002318:Cardiovascular Diseases / Q000209:etiology*; D004431:Ear, External / Q000098:blood supply*; D004562:Electrocardiography; D006112:Gravitation; D006339:Heart Rate; D006801:Humans; D008297:Male; D011674:Pulse; D014893:Weightlessness / Q000009:adverse effects*
Vzaimosviaz' pul'sovovogo krovenapolneniia sosudov mochki ukha i ékstrasistolii serdtsa pri peregruzkakh "golova--taz" posle nakhozhdeniia v usloviiakh, imitiruiushchikh nevesomost'.