A nurse is preparing to administer cefadroxil oral suspension 15 mg/kg PO to a client who weighs 98 lb. Available is cefadroxil 250 mg/5 mL. Which of the following actions should the nurse take first?

The correct answer is D: Convert the client's weight to kilograms. This is the first step because the dose of cefadroxil is calculated based on the client's weight in kilograms. To convert 98 lb to kg, divide the weight in pounds by 2.2 (1 kg = 2.2 lb). Therefore, 98 lb ├À 2.2 = 44.54 kg. Once the weight is converted to kilograms, the nurse can then calculate the dosage in milligrams (choice B) by multiplying the weight in kg by 15 mg. The nurse would then calculate the dosage in milliliters (choice C) by using the concentration of the medication (250 mg/5 mL). Rounding the amount to be administered to the nearest whole number (choice A) would be the final step before administering the medication.