A nurse is preparing to administer ibuprofen 10 mg/kg PO every 6 to 8 hr PRN pain to a child who weighs 55 lb. Available is ibuprofen suspension 100 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Step-by-Step Solution: Convert the child's weight from pounds to kilograms. 1 pound is= 0.453592 kilograms. 55 pounds = 55 x 0.453592 = 24.94756 kilograms. Calculate the total dose of ibuprofen. The prescribed dose is 10 mg/kg. The child weighs 24.94756 kg. The total dose = 10 mg/kg x 24.94756 kg = 249.4756 mg. Calculate the volume of ibuprofen suspension to administer. The available ibuprofen suspension is 100 mg/5 mL. To find the volume, we can set up a proportion: 100 mg / 5 mL = 249.4756 mg / x mL Cross-multiplying: 100x = 249.4756 x 5 Solving for x: x = (249.4756 x 5) / 100 = 12.47378 mL Round the answer to the nearest tenth. 12.5 mL.