Efficacy of carbon dioxide insufflations in single balloon enteroscopy to determine intubation depth and post procedure pain in patients referred for small bowel examination

Exposure CO2 or air was insufflated during single balloon enteroscopy .CO2 was insufflated using pump UCR Olympus. CO2 was insufflated at a rate of 2 liters per minute. Air was insufflated using the ordinary air inlet system of the endoscope rack. The approximate duration of the intervention in the CO2 group was 42 +/- 15 minutes and the air group was 43 +/- 20 minutes with a mean difference 1+/- 5 minutes, being this was not statistically significant (p = 0.7476). Mean and standard desviation of the continuous variables were calculated, in the case of nominal variables was calculated frequencies and percentages The contrasts of continuous variables between groups were based on Student's t test for independent samples, in the case of nominal variables contrasts the X2 test of Pearson was applied, continuity correction was applied in cases where the expected frequencies per cell were less than 5. Comparisons between groups of continuous variables and nominal variables was performed by using ANOVA of two factors. A value p <0.05 was considered to be a contrast statistically significant. Data were analyzed by using SPSS 18.