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A client is to receive 0.5 mg of a drug parenterally. The drug is available in a 2 mg/mL vial. The nurse would administer
- A. 0.25 mL
- B. 0.5 mL
- C. 1.0 mL
- D. 2.0 mL
Correct Answer: A
Rationale: 0.5 mg ? 1 mL / 2 mg = 0.25 mL
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The physician writes an order for a client to receive 1 mg of vitamin B12 once every month. Vitamin B12 comes in a 1000 mcg/mL vial. The nurse would administer ?... to the client each month.
- A. 0.5 mL
- B. 1.0 mL
- C. 1.5 mL
- D. 2.0 mL
Correct Answer: B
Rationale: First, the nurse needs to convert the milligrams to micrograms. Therefore, 1 mg = 1000 mcg. Since there is 1000 mcg/mL, the nurse would give 1 mL.
The nurse is checking the dosage of a drug ordered in mg/ kg. A client weighs 275lb. The client weighs kilograms.
- A. 100 kg
- B. 125 kg
- C. 150 kg
- D. 175 kg
Correct Answer: B
Rationale: Pounds must be converted to kilograms using the conversion factor of 2.2 lb in 1 kg. Therefore, 275 / 2.2 = 125.
A client is to receive a 7.5 mg/kg dose of a drug. The client weighs 155 lb. The client would receive ??..per dose
- A. 450.0 mg
- B. 528.4 mg
- C. 600.0 mg
- D. 675.0 mg
Correct Answer: B
Rationale: First, the client's weight needs to be converted to kilograms. 155 lb ? 1 kg / 2.2 lb = 70.5 kg. Then the drug dosage is calculated as follows: 70.5 kg ? 7.5 mg/kg = 528.4 mg.
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 client has a temperature of 39°C. The client's temperature is degrees Fahrenheit.
- A. 98.6°F
- B. 100.4°F
- C. 102.2°F
- D. 104.0°F
Correct Answer: C
Rationale: To convert from Celsius to Fahrenheit, the formula F = 9/5 ? C + 32 is used. Therefore, 9/5 ? 39 = 70.2, and 70.2 + 32 = 102.2.