A patient requires an IV infusion of a psychotropic medication at a dose of 0.5 mg/kg/hr. The medication is supplied in vials of 2 mg/ml. If the patient weighs 70 kg, how many milliliters of medication should be administered per hour?

A. This value does not correspond to the math required for this problem. It may result from using an incorrect weight or an incorrect concentration (e.g., assuming 1.4 mg/mL instead of 2 mg/mL). B. Step 1: Calculate the dose in mg/hr. Dose (mg/hr) = Dose per kg × Weight. Dose = 0.5 mg/kg/hr × 70 kg = 35 mg/hr. Step 2: Determine the volume to administer using the concentration. Volume (mL/hr) = Dose ÷ Concentration = 35 ÷ 2. Volume = 17.5 mL/hr. C. This value represents the total milligrams (35 mg) required per hour. This is a common "distractor" error where the total dose is calculated, but the final step, converting milligrams to milliliters based on concentration, is omitted. D. This result is mathematically unrelated to the provided variables. It could be the result of a calculation error such as dividing the weight by the dose or concentration incorrectly.