During a physical examination of the patient with chronic constipation, the WOC nurse should assess for the:

During a physical examination of the patient with chronic constipation, the WOC nurse should assess for the:

• A. Gastrocolic reflex.
• B. Sampling reflex.
• C. Rectoanal inhibitory reflex.
• D. Anal wink reflex.

Answer: (D)

The key idea is assessing sacral nerve function that controls the external anal sphincter. The anal wink reflex is a superficial perineal reflex: touching the skin around the anus triggers a brief contraction of the external anal sphincter. This reflex depends on the pudendal nerve and the sacral spinal cord segments (S2–S4). If the reflex is present, the neural pathway is intact; if it’s absent or diminished, it suggests neuropathic or sacral-cord involvement that could contribute to constipation or continence problems. In a patient with chronic constipation, checking this reflex helps identify neurologic impairment that may require further evaluation and targeted management. The other options are less directly useful in this bedside assessment: the gastrocolic reflex is a normal, meal-related activity rather than a test you perform at the exam; the rectoanal inhibitory reflex involves internal sphincter relaxation in response to rectal distension and is primarily used to evaluate conditions like Hirschsprung disease; the sampling reflex is not a standard bedside test.

The key idea is assessing sacral nerve function that controls the external anal sphincter. The anal wink reflex is a superficial perineal reflex: touching the skin around the anus triggers a brief contraction of the external anal sphincter. This reflex depends on the pudendal nerve and the sacral spinal cord segments (S2–S4). If the reflex is present, the neural pathway is intact; if it’s absent or diminished, it suggests neuropathic or sacral-cord involvement that could contribute to constipation or continence problems. In a patient with chronic constipation, checking this reflex helps identify neurologic impairment that may require further evaluation and targeted management. The other options are less directly useful in this bedside assessment: the gastrocolic reflex is a normal, meal-related activity rather than a test you perform at the exam; the rectoanal inhibitory reflex involves internal sphincter relaxation in response to rectal distension and is primarily used to evaluate conditions like Hirschsprung disease; the sampling reflex is not a standard bedside test.