This research, which has recently been presented in Seville in the framework of the 'Digestive Disease Week' organized by several scientific societies in the field, reveals that the use of CO2 is associated with a "decrease" in abdominal discomfort after the exploration, since CO2 "is easily absorbed by the small intestine and eliminated by the lungs".

This study, entitled 'Insufflation of CO2 or air in endoscopic explorations. Comparative study ', based on the basis that the use of carbon dioxide during digestive endoscopy, when compared to ambient air, was associated with a decrease in abdominal discomfort after the examination.

One study associates the insufflated use of CO2 with a "decrease" in abdominal discomfort after digestive exploration

The objective of this randomized clinical trial, which included the participation of 279 patients, was to assess the effect of CO2 insufflation on pain and abdominal distention after ileoscopy and after an ileoscopy plus a gastroscopy. 193 of the patients underwent ileoscopy, of which 120 were subjected to CO2 and 73 to ambient gas. In addition, 86 patients underwent ileoscopy plus gastroscopy, 48 with CO2 and the rest with ambient gas.

All procedures were performed under sedation and the four study groups were similar in terms of age, sex and body mass index. The researchers studied the following pain variables: for abdominal pain, a scale ranging from 1 (or absence of pain) to 10 (maximum pain) was used, both at 10 and 30 and 120 minutes after the examination. The difference in abdominal circumference before and after the examination was also measured.

Significant differences"

Considering the patients who underwent an ileoscopy, an average of 1.32 of abdominal pain was found at 10 minutes of the exploration in the CO2 group compared to the 2.11 of the pain scale in the ambient air group; from 1.06 vs. 1.40 at 30 minutes, and 1.01 vs. 1.15 at 120 minutes, respectively.

All these differences, the authors of the work point out, were "statistically significant". As for the increase in abdominal circumference, it was also higher in the air group than in the CO2 group. In fact, the difference was 2.09 in the air group versus 0.74 in the CO2 group.

Therefore, the authors of this work have concluded that the insufflation of CO2 "significantly reduces discomfort and abdominal pain, after an ileoscopy and after an ileoscopy plus a gastroscopy".


#SBcancer live-tweet: abdomen inflated with carbon dioxide gas (November 2019).