[The monitoring of gas bubbles with a pulsed Doppler ultrasonic locator in humans working in a space suit].
Presented are results of gas bubbles monitoring in decompressed humans with the use of an ultrasonic pulse-Doppler locator (PDL). Unlike the classic Doppler bubbles detectors with continuous US emission, PDL is adjusted for reception of echo from a chosen volume of the right ventricle cavity; thus, the clutter due to cardiac beats and human locomotion is successfully rejected. During simulation of Russian EVAs, venous gas bubbles were detected in 3 out of 5 experiments with test-subjects clothed in everyday wear and in 2 out of 3 experiments with suited test-subjects.
Barer
A S
AS
Katuntsev
V P
VP
Mansfel'd
A D
AD
Nikolaev
V P
VP
Reĭman
A M
AM
Sokol
E A
EA
Gnoevaia
N K
NK
Skedina
M A
MA
Akchurin
A E
AE
Shishkov
A V
AV
D000328:Adult; D003664:Decompression / Q000706:statistics & numerical data; D003665:Decompression Sickness / Q000097:blood / Q000000981:diagnostic imaging*; D005069:Evaluation Studies as Topic; D018478:Extravehicular Activity / Q000502:physiology*; D006801:Humans; D008297:Male; D008991:Monitoring, Physiologic / Q000295:instrumentation / Q000379:methods / Q000706:statistics & numerical data; D012426:Russia; D018561:Space Simulation / Q000295:instrumentation / Q000379:methods / Q000706:statistics & numerical data; D019442:Space Suits; D013997:Time Factors; D018617:Ultrasonography, Doppler, Pulsed / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D014618:Vacuum