Select the correct volume of a drug required to administer a dosage of 8 mg/kg for a patient who weighs 66 lbs and is 10 years old.The drug is available in 2-g tablets,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:66 lb. X = 66 lb/2.2 lb per kg = 30 kg. Step 2: Determine how many milligrams of the drug are required. 8 mg/kg F1F1F1S1F1F1F10 30 kg = 240 mg. Step 3: Determine the concentration of the available drug. 2 g/100 ml = 2000 mg/100 ml = 20 mg/ml. Step 4: Determine the dosage volume. 240 mg/X = 20 mg/ml. 240 = 20X; X = 240/20; X =12 ml.

Select the Correct Volume of a Drug Required to Administer