American Society of Radiologic Technologist (ASRT) Practice Exam

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During a barium enema exam, in which direction should the enema tip be inserted initially?

Posterior; exhaling
Posterior; inhaling
Anterior; exhaling
Anterior; inhaling

The correct answer is: Anterior; exhaling

The correct insertion direction for the enema tip during a barium enema exam is anterior while the patient is exhaling. This technique is important for several reasons. First, inserting the enema tip anteriorly (toward the belly button) helps to follow the natural curvature of the colon, particularly the sigmoid colon and rectum, allowing for optimal placement of the catheter and preventing trauma to the rectal wall. Additionally, having the patient exhale during the insertion helps relax the abdominal muscles and the anal sphincter, making the procedure more comfortable for the patient and reducing the risk of discomfort or resistance during insertion. In contrast, the other options involve posterior insertion or incorrect breathing patterns, which do not align with the anatomical considerations or patient comfort strategies necessary for a successful barium enema exam.