The nurse is to administer 250 ml of packed red blood cells over 3 hours. The administration set delivers 20 gtt/mL. At what rate in gtt/min should the IV infuse? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Rationale: Total volume = 250 mL Infusion time = 3 hr × 60 min/hr = 180 min Drop factor = 20 gtt/mL Step 1: Calculate mL/min: 250 mL ÷ 180 min ≈ 1.39 mL/min Step 2: Calculate gtt/min: 1.39 mL/min × 20 gtt/mL = 27.8 gtt/min = 28 gtt/min Final Answer: 28 gtt/min