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Pharmacological and Parenteral Therapies · Calculation · Take action

Levothyroxine 0.1 mg PO daily is prescribed. The tablets available are 50 mcg each. How many tablets should the nurse give?

tablets

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Answer: 2 tablets

0.1 mg = 100 mcg. 100 mcg ÷ 50 mcg = 2 tablets.

Source: Pickar. Dosage Calculations (metric conversions)

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This question is one of 182 Pharmacological and Parenteral Therapies items in NCLEXSim. On the NCLEX-RN, this category makes up 13–19% of the exam.

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Study tip
  • Learn high-alert drugs by their hold parameters and antidotes: digoxin, warfarin (vitamin K), heparin (protamine), opioids (naloxone), insulin, potassium.
  • Do 10 dosage calculations a day: tablets, liquids, mL/hr, gtt/min, mg/kg, and units/hr. Convert units first, round last.

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