A client with a ruptured appendix is recovering from surgery and requires antibiotics. The client is ordered for amoxicillin/clavulanate 5 mg/kg per day PO divided into doses every 12 hours. Available supply is 280 mg/5 mL. The client weighs 88 lb. How many mL will the nurse administer per dose? Round answer to the nearest tenths place.

Step 1 is calculate the client's weight in kilograms: 88 lb ÷ 2.2 lb/kg = 40 kg. Step 2 is calculate the total daily dose in mg: 5 mg/kg × 40 kg = 200 mg per day. Step 3 is calculate the dose per administration (every 12 hours, divided into 2 doses): 200 mg per day ÷ 2 doses/day = 100 mg per dose. Step 4 is calculate the volume to administer using the available concentration: 100 mg per dose ÷ (280 mg ÷ 5 mL) = 100 mg per dose ÷ 56 mg/mL = 1.7857 mL per dose. Step 5 is round the final answer to the nearest tenths place: 1.8 mL.