The patient is ordered 25 mg of an oral tablet every 12 hours. The drug bottle lists "50- mg scored tablets" on the label. Which statement, made by the nurse, provides accurate instruction to the patient?
Take one tablet per day.
Take ½ tablet every 12 hours.
Take one tablet twice a day.
Take ½ tablet every morning.
The Correct Answer is B
- Calculate the number of tablets per dose:
Ordered dose = 25 mg
Available tablet strength = 50 mg per tablet
Tablets to administer = (Ordered dose / Available strength)
= (25 mg / 50 mg/tablet)
= 0.5 tablet (or 1/2 tablet).
Nursing Test Bank
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Related Questions
Correct Answer is D
Explanation
A. 2.5 kg = 1 lb: This conversion overestimates the weight in kilograms. One pound is actually equal to approximately 0.454 kg.
B. 2.5 lb = 1 kg: This incorrectly suggests that 1 kilogram equals 2.5 pounds, which underestimates the weight in pounds. The accurate conversion requires 1 kg ≈ 2.2 lb.
C. 2.2 kg = 1 lb: This incorrectly reverses the relationship. One pound is approximately 0.454 kg, not 2.2 kg.
D. 2.2 lb = 1 kg: This is the correct conversion factor. One kilogram equals approximately 2.2 pounds, which the nurse can use to convert 80 lb to kilograms safely.
Correct Answer is D
Explanation
A. The units of measurement on drug labels help to identify the strength of the drug: Units on labels indicate the precise amount or potency of a medication, which guides safe and accurate dosing for therapeutic effect.
B. The unit of measurement labeled "unit" expresses the biological activity of the drug: Some medications, such as insulin and heparin, are measured in units to reflect their biological activity rather than weight or volume, which is accurate.
C. The mL, L, and meter are units of measurement found in the metric system: Milliliters, liters, and meters are standard metric units for volume and length, commonly used in medication administration and clinical measurements.
D. The mEq unit of measurement has the same concentration of solution as the mcg: Milliequivalents (mEq) measure chemical activity or ion concentration, whereas micrograms (mcg) measure mass. These units are not equivalent, so this statement requires clarification.
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