Certified Rehabilitation Registered Nurse (CRRN) Practice Exam

Why does a patient with complete SCI at T5 use digital rectal stimulation?

1. Help with mobility

2. Stimulate peristalsis and relax the anal sphincter

3. Enhance bladder control

4. Improve sensory response

The correct answer is: Stimulate peristalsis and relax the anal sphincter

A patient with complete spinal cord injury (SCI) at the T5 level utilizes digital rectal stimulation primarily to stimulate peristalsis and relax the anal sphincter. This technique is essential for managing bowel function in patients who experience neurogenic bowel due to their injury. In cases of complete SCI, the nerve pathways that typically facilitate bowel movements are disrupted. This interruption can lead to bowel dysfunction, characterized by constipation and difficulty in initiating a bowel movement. Digital rectal stimulation acts as an important intervention to promote peristalsis, which is the wave-like muscle contractions required for moving stool through the intestines. By manually stimulating the rectum, the process can trigger the bowel to contract and facilitate the passage of stool. Additionally, the stimulation helps to relax the anal sphincter, providing a dual effect that aids in effective bowel evacuation. Patients often develop individualized schedules for this practice to maintain bowel regularity, which is crucial for their overall health and comfort. While the other choices highlight significant aspects of patient care post-SCI, they do not reflect the primary purpose of digital rectal stimulation as effectively as promoting bowel evacuation through the mechanisms of peristalsis and sphincter relaxation.