A doctor has ordered a dose of Synthroid of 0.15 mg daily for a patient.The nurse learns that the pharmacy only stocks 50 mcg scored tablets.Which of the following represents the correct number of 50 mcg Synthroid tablets to give this patient?

Question

Quizplus · Accepted Answer

Drug calculations are required when the drug available is in a different unit of measure than that which is ordered.First change dosages to the same unit of measurement.Next reduce to the simplest terms.Calculate the dosage using fractions,ratios,or proportions.Use common sense to check the answer.In this example,milligrams (mg)must be converted to micrograms (mcg).Since 0.15 mg equals 150 mcg,the correct answer is 3 tablets (3 × 50 mcg = 150 mcg = 0.15 mg).

A Doctor Has Ordered a Dose of Synthroid of 0