Certified Medical Assistant (CMA AAMA)PharmacologyEasy
A physician orders 0.25 mg of digoxin PO daily. The pharmacy dispenses digoxin tablets labeled 0.125 mg per tablet. How many tablets should the medical assistant administer per dose?
- A2 tablets
- B0.5 tablets
- C1 tablet
- D2.5 tablets
Show answer & explanationAnswer & explanation
Correct answer: A. 2 tablets
To calculate the number of tablets, divide the ordered dose by the dose per tablet: 0.25 mg / 0.125 mg/tablet = 2 tablets. This ensures the patient receives the correct amount of medication.
Why the other options are wrong
- B. This would be half the ordered dose, leading to under-dosing.
- C. This would be half the ordered dose, leading to under-dosing.
- D. This would be an overdose, as it's more than the prescribed amount.
Tablet Dosage Calculation
To calculate the number of tablets to administer, divide the ordered dose by the available dose per tablet.
- Formula: (Ordered Dose / Available Dose per Tablet) = Number of Tablets.
- Always double-check calculations.
- Essential for accurate medication administration.
Memory trick: Order Divided by Available tells you How Many.