The Effect of Hypercapnia on the Decompression Sickness Risk During Simulated Extravehicular Activity 941332
This study compared the effect of increased CO2 partial pressure in atmosphere up to 30 mm Hg (i.e. hypercapnia) on the risk of decompression sickness (DCS) during decompressions simulating space extravehicular activity (EVA). Test subjects were exposed to a pressure 330, 308 and 261 mm Hg, breathed O2-CO2 gas mixture under experimental or 100% O2 control conditions. DCS symptoms (joint pains) developed in 32.7% (33/101) of control and 67.9% (72/106) of experimental exposures (p<0.05). This finding is of importance for delivering medical support during EVA.
Citation: Katuntsev, V., Poleshchuk, I., and Kazakova, R., "The Effect of Hypercapnia on the Decompression Sickness Risk During Simulated Extravehicular Activity," SAE Technical Paper 941332, 1994, https://doi.org/10.4271/941332. Download Citation
Vladimir P. Katuntsev, Igor P. Poleshchuk, Raisa T. Kazakova
Institute of Biomedical Problems
International Conference On Environmental Systems
SAE 1994 Transactions: Journal of Aerospace-V103-1