Select the correct volume of a drug required to administer a dosage of 5 mg/kg for a patient who weighs 88 pounds and is 12 years old.The drug is available as a 1-g tablet,which will be mixed in enough water to make 100 ml of final solution (W/V).

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Step 1: Convert weight in pounds to kilograms. 1 kg:2.2 lb = X:88 lb. X = 88 lb/2.2 lb per kg = 40 kg. Step 2: Determine how many milligrams of drug are required. 5 mg/kg F1F1F1S1F1F1F10 40 kg = 200 mg. Step 3: Determine the concentration of the available drug. 1 g/100 ml = 1000 mg/100 ml = 10 mg/ml. Step 4: Determine the dosage volume. 200 mg/X = 10 mg/ml; 10X = 200; X = 200/10; X = 20 ml.

Select the Correct Volume of a Drug Required to Administer