INTRAVASCULAR CHANGES ASSOCIATED WITH HYPERBARIC DECOMPRESSION: THEORETICAL CONSIDERATIONS USING ULTRASOUND

Authors
  1. Nishi, R.Y.
  2. Livingstone, S.D.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
Doppler blood flowmeters have been used to detect intravascular gas bubbles which are considered to be a major cause of decompression sickness. However, observations by various investigators have indicated that other factors such as red cell agglutination, platelet aggregates and coalescence of lipids may be involved in decompression sickness. The possibility of using the Doppler flowmeters to detect such particles in the blood has been investigated theoretically. Experimental results from these devices implanted around the inferior venae cavae of rabbits are presented showing the waveform for bubbles as well as changes which appear in the blood flow waveform during decompression. The latter may indicate aggregation of erythrocytes and/or platelets.
Report Number
RP-854 — Research Paper
Date of publication
01 Jan 1973
Number of Pages
5
Reprinted from
Aerospace Medicine, vol 44, no 2, 1973, p179-183
DSTKIM No
73-04826
CANDIS No
19786
Format(s):
Hardcopy

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