A nurse is preparing to administer gentamicin 1 mg/kg IM to a client who weighs 154 lb. Available is gentamicin solution 40 mg/mL. 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.)

Convert the client's weight from pounds to kilograms: There are 2.205 pounds in 1 kilogram. 154 lb = 154 lb / 2.205 lb/kg = 70 kg (rounded to the nearest whole number). Determine the total dosage: The client is prescribed 1 mg/kg of gentamicin. The client weighs 70 kg. The total dosage is 1 mg/kg x 70 kg = 70 mg. Determine the volume per dose: The gentamicin solution contains 40 mg per 1 mL. The nurse needs to administer 70 mg per dose. To find the volume per dose: 40 mg / 1 mL = 70 mg / x mL Cross-multiplying gives us: 40x = 70 Dividing both sides by 40, we get: x = 1.75 mL Round the answer to the nearest tenth: Rounding 1.75 to the nearest tenth gives us 1.8 mL.