Radiation and G tolerance in rats.
Male hooded rats were exposed to 2100 rad 60Co radiation and 18 h later were exposed to +Gz acceleration until heart rate was reduced to 50% of baseline rate. G tolerance was 9.2% less in irradiated rats than in controls. Although small, this difference was significant at p less than 0.05. A similar group of rats was anesthetized 18 h postirradiation and carotid mean arterial pressures were measured. Mean arterial pressure was 122.1 torr for controls and 114.5 for irradiated. This difference was not significant.
D000054:Acceleration; D000818:Animals; D001794:Blood Pressure / Q000528:radiation effects*; D002339:Carotid Arteries; D003037:Cobalt Radioisotopes; D006112:Gravitation; D006339:Heart Rate / Q000528:radiation effects; D008297:Male; D008954:Models, Biological; D051381:Rats; D013997:Time Factors
D003037:Cobalt Radioisotopes