How it Works
Try Naxlex NCLEX-RN (Free-Trial)

Which of the following represents the base units of the metric measurement system used in clinical practice?

A.

Cup, tablespoon, kilogram

B.

Ounce, teaspoon, pound

C.

Gram, liter, meter

D.

Minim, dram, grain

Answer and Explanation

The Correct Answer is C

A. Cup, tablespoon, kilogram: Cups and tablespoons are household measurements, not standard metric units. Kilogram is a metric unit for mass, but the combination with non-metric units makes this option incorrect for base metric units used in clinical practice.

B. Ounce, teaspoon, pound: These are customary or imperial units, commonly used in the United States for cooking or informal measurements, and are not part of the metric system used in clinical practice.

C. Gram, liter, meter: Gram (mass), liter (volume), and meter (length) are the base units of the metric system and are standard in clinical practice. They provide consistent, precise measurements essential for medication dosing, fluid administration, and laboratory calculations.

D. Minim, dram, grain: These are apothecary units, an older system previously used in pharmacy, and are largely obsolete in modern clinical practice due to inconsistency and lack of standardization compared with the metric system.


Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Free Nursing Study Resources

Related Questions

Correct Answer is C

Explanation

A. U-500 syringe: A U-500 syringe is designed for very high-concentration insulin (500 units/mL), not standard U-100 insulin. Using it for a 15-unit U-100 dose would result in a dangerously high dose.

B. 0.5 mL syringe: A 0.5 mL syringe can hold up to 50 units of U-100 insulin, but the markings are less precise for small doses like 15 units, increasing the risk of measurement error.

C. 0.3 mL syringe: A 0.3 mL insulin syringe is ideal for small doses up to 30 units of U-100 insulin. Its fine calibration allows accurate measurement of a 15-unit dose, ensuring safe administration.

D. 1 mL syringe: Although a 1 mL syringe can accommodate the 15-unit dose, the larger markings reduce precision, making it less accurate than a 0.3 mL syringe for small insulin doses.

Correct Answer is C

Explanation

Calculation:

  • conversion factor between pounds and kilograms

1 kilogram = 2.2 pounds

  • Convert the weight to kilograms

Weight (kg) = Weight (lb) ÷ 2.2

Weight (kg) = 154 ÷ 2.2

Weight (kg) = 70 kg

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

Register