A nurse is caring for a client who is postoperative following knee arthroplasty and has a new prescription for 1mg/kg/dose subcutaneous every 12 hr. The client weighs 185 lb. How many mg should the nurse administer per dose? (Round the answer to the nearest tenth. Use leading zero if it applies. Do not use a trailing zero.)

To calculate the correct dose in mg, first convert the client's weight from lb to kg. 1 lb is approximately 0.45 kg. So, 185 lb is approximately 83.9 kg. Next, multiply the weight in kg by the prescribed dose of 1mg/kg. This gives 83.9 * 1 = 83.9 mg. Round this to the nearest tenth to get 83.3 mg. The correct answer is 83.3 mg because it accurately calculates the dose based on the client's weight and the prescribed dosage. Other choices are incorrect as they either do not consider the weight conversion or do not correctly calculate the dosage according to the prescription.