Final answer:
The nurse should include the instruction to avoid lifting anything heavier than 5 pounds with the right arm after a mastectomy and lymph node dissection to promote proper healing and reduce the risk of complications.
Step-by-step explanation:
The nurse should include the discharge instruction to avoid lifting anything heavier than 5 pounds with your right arm. This is because the right mastectomy with axillary lymph node dissection is a surgical procedure that requires proper healing and rest. Lifting heavy objects can strain the healing tissues and increase the risk of complications. The patient should follow this instruction to ensure a smooth recovery and reduce the chances of further injury.
Sleeping with the arm raised on pillows to reduce swelling is not an appropriate discharge instruction because it may actually hinder blood circulation and cause discomfort. Beginning a vigorous exercise regimen to increase arm mobility may also be inappropriate immediately after surgery, as the body needs time to heal. The patient should consult with their healthcare provider about when it is appropriate to start exercise and how to gradually increase activity.