Double-contrast barium enema study: simple conversion to CO2

The use of CO2 instead of room air for double-contrast barium enema (DCBE) studies has been shown to decrease discomfort after the study. An inexpensive system assembled from materials currently used to perform pneumocolon examinations is described, which simplifies conversion to CO2 use for the DCBE study. No changes in currently used pneumocolon techniques are necessary with the use of CO2.