Colonoscopy is also a time-intensive procedure, averaging 31 minutes in the endoscopy suite, including 10.3 minutes to scope from rectum to cecum and 4.1 minutes on average to reconcile anomalies reported from previous air-contrast barium enema
exams or computed tomography (CT) colonography.
The alternative to complete visualization of the colon by colonoscopy is air-contrast barium enema
. Colonoscopy has been shown to be more acceptable to patients, however, and it is more sensitive than barium enema examination.(14)(26) On the other hand, some believe that the higher acceptance rates for colonoscopy have been biased because each patient receives intravenous sedation.
In the air-contrast barium enema
procedure, air is inserted into the patient's colon along with a barium solution.