The 78-year-old client who had hip surgery is to receive a unit of packed red blood cells (PRBC). The nurse’s assessment reveals bilateral crackles in the lungs and 2+ edema of the sacrum. The PRBCs...

The 78-year-old client who had hip surgery is to receive a unit of packed red blood cells (PRBC). The nurse’s assessment reveals bilateral crackles in the lungs and 2+ edema of the sacrum. The PRBCs contain 250 mL of cells and 60 mL of preservative solution. At what rate will the nurse set the IV infusion pump after the initial 15 minutes?