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A client is to receive 250 mg of penicillin VK twice daily for 10 days. Penicillin VK is available in a 500 mg tablet. The nurse would instruct the client to take???.tablet at each dose.
- A. 1/4 tablet
- B. 1/2 tablet
- C. 1 tablet
- D. 2 tablets
Correct Answer: B
Rationale: 250 mg / 500 mg = 0.5 tablets.
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A client weighs 56 kg. The client weighs pounds.
- A. 112.0 lb
- B. 123.2 lb
- C. 134.4 lb
- D. 145.6 lb
Correct Answer: B
Rationale: Kilograms must be converted to pounds using the conversion factor of 2.2 pounds in 1 kg. Therefore, 56 ? 2.2 = 123.2.
The health care provider orders chlorpromazine 25 mg IM. The drug is supplied as chlorpromazine 50 mg/mL in a 1-mL ampule. How much would the nurse administer?
- A. 0.25 mL
- B. 0.5 mL
- C. 0.75 mL
- D. 1.0 mL
Correct Answer: B
Rationale: The drug is supplied as 50 mg in 1 mL. Calculating the dosage using the formula D / H ? Q, the equation would read: 25 mg / 50 mg ? 1 mL = 0.5 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 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.
A nurse is reading a drug label. Which of the following might help the nurse distinguish between the trade and generic names on the drug label? Select all that apply.
- A. The trade name is written in smaller print.
- B. The trade name is usually capitalized.
- C. The trade name is followed by a registration symbol.
- D. The trade name is often in parentheses.
- E. The trade name is found under the generic name.
Correct Answer: B,C
Rationale: To help the nurse distinguish between the trade and generic names on a drug label, the nurse should know the following: the trade name is usually capitalized, written first on the label, and identified by the registration symbol, whereas the generic name is written in smaller print, often in parentheses, and usually located under the trade name.