A nurse is preparing to administer pentamidine 4 mg/kg IM to a client who weighs 154 lb. Available is pentamidine 100 mg/mL for infection. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.) ________ mL

Step 1 is to convert the client's weight from pounds (lb) to kilograms (kg) Conversion factor: 1 kg = 2.2 lbs Weight in kg = 154 ÷ 2.2 154 ÷ 2.2 = 70 kg Step 2 is to calculate the total dose in milligrams (mg) Total mg Dose = Weight in kg × Dosage (mg/kg) Total mg Dose = 70 × 4 70 × 4 = 280 mg Step 3 is to calculate the volume to administer in milliliters (mL) Volume = (Ordered Dose ÷ Available Dose) × Available Volume Volume = (280 ÷ 100) × 1 280 ÷ 100 = 2.8 2.8 × 1 = 2.8 Step 4 is to round to the nearest tenth 2.8 = 2.8 Answer: 2.8 mL