Final answer:
The nurse should include in the discharge teaching that the patient should avoid high-fiber foods after a colostomy operation during the early recovery period.
Step-by-step explanation:
A nurse is planning discharge teaching for a patient who is post-operative following placement of a colostomy. Among the options provided, the nurse should plan to include the statement: "Avoid high-fiber foods in your diet." This recommendation is often given in the early post-operative period to allow the bowel to heal. Over time, the patient will be able to reintroduce fiber into their diet slowly. Statements regarding cleaning the stoma with alcohol-based solutions or limiting fluid intake to prevent leakage are incorrect and may lead to complications or dehydration, while the frequency of changing the pouch system can vary based on the type of system used and the individual patient's needs.