Final answer:
The nurse should include the intervention of allowing uninterrupted rest and sleep in the discharge teaching of a client diagnosed with pericarditis.
Step-by-step explanation:
When discharging a client diagnosed with pericarditis, the nurse should include several interventions in the discharge teaching. However, the most appropriate intervention out of the given options is to be sure to allow for uninterrupted rest and sleep. Pericarditis is an inflammation of the pericardium, the membrane that surrounds the heart. Rest and sleep are essential for healing and reducing stress on the heart.