The Effect of Intraluminal Oxygen Insufflation on the Oxygenation of Gut Mucosa in Hemorrhaged Cats

Lee, Yu Mee; Park, Pyung Hwan; Kim, Joung Uk; Jo, Sam Soon

Abstract

BACKGROUND: This study was purposed to study the therapeutic value of intraluminal oxygen insufflation on the oxygenation of gut mucosa in a feline model subjected to a hemorrhagic shock followed by reperfusion.
METHODS
Eighteen cats were divided into three groups : For group 1, 6 cats were subjected to sham operation as a control group ; for group 2, 6 cats were subjected to a hemorrhagic shock for 2 hours prior to reperfusion as a hemorrhagic shock(HS) group ; for group 3, 6 cats were subjected to a simultaneous insufflation of intraluminal oxygen, continued during the shock and reperfusion periods as a oxygenated hemorrhagic shock(OHS) group. Mesenteric PvO2, mesenteric venous arterial(v-a) lactate difference, mesenteric P(v-a)CO2 and mesenteric pH(a-v) were measured for every 30 minutes during the shock and reperfusion.
RESULTS
The lactate(v-a) was increased during the shock. For group OHS, the lactate(v-a) returned to the baseline value after reperfusion, but for group HS, it did not return. The values of pH(v-a) and P(v-a)CO2 were increased during the shock and returned to the baseline value for group OHS, but for group HS, the increase was greater than group OHS(p<0.05), but not returned to the baseline value after reperfusion. For both pH(v-a) and P(v-a)CO2, there were statistically significant differences(p<0.05) between group HS and group OHS during the shock and reperfusion.
CONCLUSIONS
We conclude that the insufflation of intraluminal oxygen improves the oxygenation of gut mucosa in the feline model undergone a hemorrhagic shock followed by reperfusion.