Certified Rehabilitation Registered Nurse (CRRN) Practice Exam

What is a characteristic of the autonomous neurogenic bowel?

1. Flaccid anal sphincter

2. Overactive rectal contractions

3. Hyperactive anal sphincter

4. Normal bowel sensation

The correct answer is: Flaccid anal sphincter

The characteristic of the autonomous neurogenic bowel is a flaccid anal sphincter. This condition arises from damage to the autonomic nerves that manage bowel function, which is common in conditions such as spinal cord injury. The flaccidity of the anal sphincter means that there is a lack of muscle tone and control, leading to difficulties with bowel retention and potential incontinence. In a neurogenic bowel, the typical sensations associated with bowel movements may be affected, making normal bowel sensation less likely. Consequently, overactive rectal contractions and hyperactive anal sphincter are not characteristics associated with an autonomous neurogenic bowel; rather, these would suggest a different underlying pathology, where normal autonomic control is disrupted, leading to atypical bowel behaviors. Overall, recognizing the characteristics of an autonomous neurogenic bowel is crucial for appropriate rehabilitation and management strategies.