A nurse is assisting in the care of a client who is to receive a transfusion of packed red blood cells (PRBCs). Which of the following solutions should be administered with PRBCs?

The correct answer is 1.5 mL. Here is the explanation:

To calculate the amount of mL to administer, the nurse should use the following formula:

mL = (units ordered / units available) x mL available

Plugging in the values from the question, we get:

mL = (15,000 / 10,000) x 1

mL = 1.5 x 1

mL = 1.5

Therefore, the nurse should administer 1.5 mL of heparin with each dose.

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.