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After teaching a group of nursing students about measurement systems, the instructor determines that the teaching was successful when the students identify which of the following as units of the metric system?
- A. Minims
- B. Grains
- C. Drams
- D. Grams
Correct Answer: D
Rationale: Grams are units of weight in the metric system. Minims are units of volume in the apothecary system. Grains and drams are units of weight in the apothecary system.
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When assessing a client's temperature, the nurse finds it to be 99°C. The client's temperature is degrees Celsius.
- A. 36.0°C
- B. 37.2°C
- C. 38.4°C
- D. 39.6°C
Correct Answer: B
Rationale: To convert Fahrenheit to Celsius, the formula C = 5/9 ? (F - 32) is used. Therefore, 99 - 32 = 67, and 67 ? 5/9 = 37.2.
A physician writes an order for a client to receive levothyroxine (Synthroid) 0.2 mg, but 100-mcg tablets are supplied. The nurse would administer tablets to the client.
- A. One tablet
- B. Two tablets
- C. Three tablets
- D. Four tablets
Correct Answer: B
Rationale: 1000 mcg / 1 mg = 100 mcg / X mg
X = 100 / 1000
X = 0.1 mg
0.2 mg / 0.1 mg = 2
A group of nursing students are reviewing the various systems of measurement. The students demonstrate understanding of the information when they identify which of the following as a metric system unit? Select all that apply.
- A. Inch
- B. Milligram
- C. Centimeter
- D. Ounce
- E. Pound
Correct Answer: B,C
Rationale: The metric system uses the gram, liter, and meter. Milligram and centimeter are metric units.
A nursing instructor is describing the various work factors that can lead to errors in dosage calculations to a group of nursing students. The instructor determines that the teaching was successful when the students identify which of the following as a factor? Select all that apply.
- A. Poor lighting
- B. Heavy workload
- C. Noise
- D. Temperature
- E. Interruptions
Correct Answer: A,B,C,E
Rationale: Factors in the work environment that often contribute to errors made by people include poor lighting, noise, interruptions, and a taxing workload.
A client is prescribed 500 mg of ampicillin IM. The drug is supplied in a multidose vial that requires reconstitution with 2 mL sterile water for injection. The resulting concentration contains 250 mg/mL. How much of the drug would the nurse administer?
- A. 0.5 mL
- B. 1.0 mL
- C. 1.5 mL
- D. 2.0 mL
Correct Answer: D
Rationale: The drug is supplied as 250 mg/mL after reconstitution. To calculate the amount needed, set up the equation: 500 mg / 250 mg ? 1 mL = 2.0 mL.