Which of the following is a key feature of the apothecary system that differs from the metric system?
It is based on units of 10.
It uses Roman numerals and fractions.
It is the most commonly used system in healthcare today.
It measures exclusively in milliliters.
The Correct Answer is B
A. It is based on units of 10: The metric system, not the apothecary system, is based on units of 10. This allows for easy conversion between units like grams, liters, and meters.
B. It uses Roman numerals and fractions: The apothecary system often uses Roman numerals and fractional notation (e.g., ℥ for ounces, ℨ for dram) to indicate quantities. This differs from the metric system’s decimal-based, standardized measurements and is less commonly used today due to complexity.
C. It is the most commonly used system in healthcare today: The metric system is the standard in modern healthcare for medication dosing and measurements. The apothecary system is largely historical and rarely used.
D. It measures exclusively in milliliters: Measuring exclusively in milliliters is a feature of the metric system, not the apothecary system. Apothecary measurements include units like grains, drams, and ounces rather than standardized metric volumes.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Calculation:
- Convert the prescribed dose to the same unit as the available tablets
Prescribed Dose: 0.75 g
= 750 mg
Available Tablet Strength: 250 mg per tablet
- Calculate the number of tablets to administer
Number of Tablets = Prescribed Dose ÷ Tablet Strength
Number of Tablets = 750 ÷ 250
Number of Tablets = 3 tablets
Correct Answer is C
Explanation
A. Delegating the preparation of insulin to an unlicensed assistive personnel (UAP): Delegating insulin preparation to a UAP is unsafe because insulin is a high-alert medication requiring licensed personnel to calculate and administer doses accurately. Delegation in this context increases the risk of dosing errors.
B. Drawing up insulin directly from a mixed vial without clarification: Drawing up insulin from a mixed vial without confirming the order or type can lead to administering the wrong insulin, incorrect dosing, or mixing incompatible insulins, all of which compromise patient safety.
C. Double-checking the insulin dose with another licensed nurse before administration: Verifying the insulin type and dose with a second licensed nurse ensures accuracy and minimizes the risk of medication errors. This practice is a critical safety measure for high-alert medications like insulin.
D. Administering insulin without verifying the type of insulin ordered: Administering insulin without checking the order can result in giving the wrong type, which can lead to hypoglycemia, hyperglycemia, or inadequate glycemic control.
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