Final answer:
The best intervention for a client experiencing abdominal gas after a hysterectomy is ambulation, which helps stimulate the gastrointestinal system. Medication for gas relief can be used as well, whereas heat application may only offer temporary symptomatic relief. The supine position is not recommended as it can inhibit gas movement.
Step-by-step explanation:
If a client complains of abdominal gas after a hysterectomy, the best intervention is generally ambulation. Moving around and walking after surgery can help stimulate the gastrointestinal system and aid in the expulsion of gas. Medication for gas relief can also be considered to help alleviate discomfort. Using heat application may provide some symptomatic relief, but it is not the primary method for treating postoperative gas. Advising the client to maintain a supine position is not typically recommended for gas relief and can actually inhibit the movement of gas through the intestines.