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A home health care nurse is reviewing a client's medication during a home visit. The client is prescribed atorvastatin 10 mg daily, a change from his previous order of 20 mg daily. The client shows the nurse the medication container from the pharmacy. The label reads atorvastatin 20 mg. The nurse determines that the client is taking the correct dosage when the client states he is taking which of the following
- A. 1/2 tablet every day
- B. 1 tablet every day
- C. 1/2 tablet every other day
- D. 1 tablet every other day
Correct Answer: A
Rationale: The on-hand dose of the drug is 20 mg, but the client is to take 10 mg daily. So the client is correct when he says that he takes 1/2 tablet daily. Any other dosage would be incorrect.
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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
A client weighs 200 lb. The client is to receive 5 mg/kg per dose of a drug. The client will receive ?. mg of the drug in each dose.
- A. 400.0 mg
- B. 454.5 mg
- C. 500.0 mg
- D. 550.0 mg
Correct Answer: B
Rationale: First, the patient's weight must be converted to kilograms: 200 lb ? 1 kg / 2.2 lb = 90.9 kg. Then the dosage is calculated: 90.9 kg ? 5 mg/kg = 454.5 mg.
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 nursing instructor is describing the importance of preventing errors in medication administration and doses. Which of the following would the instructor emphasize as the best method for detecting errors?
- A. Checking calculations three times
- B. Having each person involved in the process check the dosage
- C. Reading drug labels very carefully
- D. Checking the dosage in a reputable drug reference
Correct Answer: B
Rationale: The best method of error detection is the manual redundancy system. This is a system in which each person in the process of medication prescription and delivery checks the drug dosage for accuracy. Nurses use this system when they perform the 5 rights and 3 checks to catch a potential error in drug administration. Double checking calculations and reading labels carefully are important, but they are not the best method for detecting errors. Checking the dosage in a reputable drug reference would help to ensure that the dosage is within the safe dosage range, but this would do nothing to ensure that the dosage is accurate.
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.