Final answer:
The client should follow a high-fiber diet to stimulate bowel movements after not having one for 4 days post-surgery.
Step-by-step explanation:
If a client has not had a bowel movement since coming home from the hospital after surgery 4 days ago, it is advised that they follow a high-fiber diet. Foods high in fiber can help stimulate bowel movements by adding bulk to the stool and promoting healthy intestinal function. High-fiber foods include fruits, vegetables, whole grains, and legumes. It is also important for the client to stay hydrated and possibly increase physical activity if not contraindicated by their post-surgical status.