The Application of CO2 Insufflations in Routine Colonoscopy Examination for Duration in Toilet After Examination Compared With Air Insufflations

It has been reported that carbon dioxide (CO2) insufflation can reduce patient pain and abdominal discomfort during and after colonoscopy. Its safety and efficacy during colonoscopy even under sedation has been already assessed in some earlier trials. Air insufflation is still the standard method, however, due a lack of suitable replacement of equipment or technical improvement in colonoscopy. The investigators use radio frequency identification (RFID) technology to record the number of times and duration in the toilet of the patient after colonoscopy examination. These data may be proxies for discomfort. With application of CO2 insufflation, the times and duration in the toilet after examination will decrease as well as patient's discomfort after procedure, and further improvement of patient compliance can be anticipated.