NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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What additional medication can be added PRN in both high and moderate emetic risk regimens?

  1. NK1-RA

  2. Lorazepam

  3. 5HT-3 RA

  4. Benzos

The correct answer is: Lorazepam

PRN stands for "as needed" or "pro re nata", meaning that the medication can be administered when necessary. In this case, the additional medication can be added as needed in both high and moderate emetic risk regimens. Options A, C, and D are not suitable because they are not specific medications. NK1-RA and 5HT-3 RA are classes of medication used to prevent nausea and vomiting in chemotherapy patients, and benzodiazepines (benzos) are a class of medication used to treat anxiety. Option B, Lorazepam, is a specific medication that belongs to the benzodiazepine class and can be used as an additional medication PRN in high and moderate emetic risk regimens.