127. EFFECT OF RAPID DECOMPRESSION FROM A HIGH PRESSURE ATMOSPHERE ON BLOOD GASES: DOG 



As a result of rapid decompression, from a gauge pressure of 651b/sq in. of air for 105 minutes' duration, nascent 

 gas bubbles became raacroscopically visible in the circulation. Massive embolization and tachypnea supervened 

 after reduction of pressure to normal in 5-6 seconds (asphyxial period). Dogs were then recompressed at a gauge 

 pressure of 30 Ib/sq in. of air or oxygen for 84 minutes (recompression period), and finally decompressed by stages 

 for 30 minutes until pressure was again normal (post- recompression period). Data for asphyxial period taken 

 immediately prior to recompression; data for post- recompression period taken after breathing normal air for one 

 hour. 



Air Inhalation 



HI 4.2 vol % added to normal capacity by 

 Contributor : Behnke, A. R. 

 Reference: Behnke, A. 



O2 in physical solution. 



114:526, 1936. 



R., Shaw, L. A., Messer, A. C, Thomson, R. M., and Motley, E. P.. Am. J. Physiol. 



128. EFFECT OF DECOMPRESSION IN 5 SECONDS FROM HIGH PRESSURE ATMOSPHERES ON 

 RESPIRATORY RATE AND BLOOD PRESSURE: DOG 



Ill Recorded from a manometer connected to a cannula in femoral artery. 



175 



