Dosage Calculation Proctored Exam
Calculation
A client is prescribed levothyroxine 200 mcg PO daily before breakfast. In the medication room are tablets labelled 0.05 mg/tablet. How many tablet(s) will you administer to the client? Fill in the blank with a numeric value. Answer to the nearest whole tablet
tablets
Explanation & Rationale
Convert micrograms (mcg) to milligrams (mg): The prescribed dose is 200 mcg. We know that 1 mg = 1000 mcg. Therefore, 200 mcg = 200 / 1000 = 0.2 mg. Calculate the number of tablets: Each tablet contains 0.05 mg of levothyroxine. The desired dose is 0.2 mg. We can use the following formula: (Desired dose) / (Tablet strength) = Number of tablets (0.2 mg) / (0.05 mg/tablet) = 4 tablets
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