Final answer:
For a client with Crohn's disease and an enteroenteric fistula, a nurse should advise reducing dietary fiber to avoid exacerbating symptoms and the risk of intestinal blockages.
Step-by-step explanation:
When teaching a client with Crohn's disease and an enteroenteric fistula about dietary management, the nurse should instruct the client to decrease their intake of fiber. Crohn's disease is a type of inflammatory bowel disease that affects nutrient absorption and can cause complications like obstructions and abscesses in the GI tract. In the case of an enteroenteric fistula, which is an abnormal connection between two parts of the intestine, the presence of fiber can exacerbate symptoms and potentially lead to a blockage. Therefore, it's important to manage fiber intake carefully.