A nurse is receiving a telephone prescription for a client and documents it as metformin 500 mg PO BID. Which of the following elements should the nurse identify is missing from the prescription?
Dosage
Route
Medication
Time/frequency
The Correct Answer is C
Choice A reason: This is incorrect because the dosage is given in the prescription as 500 mg, which indicates the amount of the drug to be administered.
Choice B reason: This is incorrect because the route is given in the prescription as PO, which stands for per os or by mouth, which indicates how the drug is to be administered.
Choice C reason: This is correct because the medication is not given in the prescription, which is the name of the drug to be administered. The nurse should ask the provider to clarify the medication name and spell it out if necessary.
Choice D reason: This is incorrect because the time/frequency is given in the prescription as BID, which stands for bis in die or twice a day, which indicates when and how often the drug is to be administered.
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Related Questions
Correct Answer is B
Explanation
Choice A reason: This is incorrect because the patient may not see a response from the medication for at least six months. The patient should continue taking the medication as prescribed and follow up with the provider regularly.
Choice B reason: This is correct because finasteride can cause birth defects in male fetuses if it is absorbed through the skin or ingested by pregnant women. The patient should wear gloves when handling the tablets and avoid contact with crushed or broken tablets.
Choice C reason: This is incorrect because PSA levels will decrease while taking this medication. PSA stands for prostate-specific antigen, which is a marker for prostate cancer. The patient should inform the provider that they are taking finasteride before having a PSA test, as it may affect the results.
Choice D reason: This is incorrect because grapefruit juice does not interact with finasteride. However, the patient should avoid alcohol and other medications that may affect the liver while taking finasteride.

Correct Answer is D
Explanation
Choice A reason: 0.2 tablets is not the correct answer. To convert mg to mcg, multiply by 1000. Therefore, 0.175 mg is equal to 175 mcg. To find the number of tablets, divide the dose by the amount available. Therefore, 175 mcg / 8 mcg = 21.875 tablets. Round this to the nearest whole number, which is 22 tablets.
Choice B reason: 2 tablets is not the correct answer. This is the result of dividing the dose by 100 instead of 1000, which is incorrect.
Choice C reason: 20 tablets is not the correct answer. This is the result of rounding down instead of up, which is incorrect.
Choice D reason: 22 tablets is the correct answer. This is the result of converting the dose to mcg, dividing by the amount available, and rounding to the nearest whole number.
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