Certified Medical Assistant Practice Exam

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Calculate the following drug dosage: An infant who weighs 12 pounds 5 ounces is ordered fluconazole qid for treatment of thrush. The label reads 150mg in 3cc of suspension. The recommended range of the medication is 3mg/kg/day. How much should the infant receive per dose?

1.5cc
2.4cc
0.8cc
0.2cc

The correct answer is: 0.8cc

To determine how much the infant should receive per dose, first, it is essential to convert the infant's weight from pounds and ounces to kilograms, as the medication dosage is based on weight in kilograms. The infant's weight is 12 pounds and 5 ounces. There are 16 ounces in a pound, so converting the total weight to ounces gives us: 12 pounds * 16 ounces/pound = 192 ounces Adding the additional 5 ounces results in a total of 197 ounces. Next, convert ounces to kilograms. There are about 35.274 ounces in a kilogram, so: 197 ounces ÷ 35.274 ounces/kg ≈ 5.58 kg The recommended dosage for the medication is 3 mg/kg/day. To find out how much medication the infant needs in a day, multiply the infant's weight in kg by the recommended dosage: 5.58 kg * 3 mg/kg/day = 16.74 mg/day Since the medication is to be given four times a day (qid), dividing the total daily dosage by four provides the per-dose amount: 16.74 mg/day ÷ 4 = 4.185 mg per dose. Next, since the suspension provided is 150 mg