A nurse is caring for a client who is scheduled to undergo an esophagogastroduodenoscopy. Which of the following actions should the nurse take in preparation for the procedure?

Choice A reason: Delaying ambulation until the next day is not an appropriate intervention, as it can cause stiffness, muscle weakness, or joint contractures in the affected knee. The nurse should encourage regular exercise and activity within the client's tolerance level to maintain joint mobility and function.

Choice B reason: Applying moist heat prior to ambulation is an appropriate intervention, as it can reduce pain and inflammation in the affected knee by increasing blood flow and relaxing the muscles and tendons around the joint.

Choice C reason: Using a continuous passive motion machine is not an appropriate intervention for osteoarthritis, as it is mainly used after knee replacement surgery to prevent scar tissue formation and improve range of motion in the new joint.

Choice D reason: Restricting intake of dairy products is not an appropriate intervention for osteoarthritis, as dairy products are good sources of calcium and vitamin D that can support bone health and prevent osteoporosis. The nurse should advise the client to eat a balanced diet that includes fruits, vegetables, whole grains, lean protein, and low-fat dairy products.

Choice A reason: Chest x-ray showing cardiomegaly is not a new finding for the client who has heart failure, as it indicates enlargement of the heart due to increased workload and pressure on the cardiac chambers.

Choice B reason: PaCO2 55 mmHg is an abnormal finding for the client who has heart failure, as it indicates respiratory acidosis, which is a condition where the lungs cannot eliminate enough carbon dioxide and the blood becomes too acidic. This can be caused by pulmonary edema, which is a complication of heart failure that impairs gas exchange and ventilation.

Choice C reason: Potassium level 4.5 mEq/L is a normal finding for the client who has heart failure, as it indicates adequate electrolyte balance and renal function.

Choice D reason: Urinary output of 1,000 mL in 12 hr is a normal finding for the client who has heart failure, as it indicates adequate fluid status and cardiac output.