HESI LPN
Pharmacology HESI 55 Questions 2023
1. The client is receiving vancomycin, and the nurse plans to draw blood for a peak and trough to determine... the best timing for these levels?
- A. Midway through administration of the IV dose and 30 minutes before the next
- B. Two hours after completion of the IV dose and 30 minutes before the next
- C. Two hours after completion of the IV dose and one hour before the next
- D. Immediately after completion of the IV dose and 30 minutes before
Correct answer: B
Rationale: To accurately determine peak and trough levels of vancomycin, blood should be drawn two hours after the completion of the IV dose and 30 minutes before the next dose. This timing allows for appropriate assessment of the drug levels in the body, ensuring accurate monitoring of therapeutic and toxic concentrations. Choice A is incorrect as drawing blood midway through administration does not provide an accurate peak level. Choice C is incorrect as drawing blood one hour before the next dose does not represent the trough level. Choice D is incorrect because drawing blood immediately after completion of the IV dose does not allow enough time for the drug to reach peak levels.
2. A client with rheumatoid arthritis is prescribed methotrexate. What is the most important instruction the practical nurse (PN) should provide to the client?
- A. Take the medication on an empty stomach.
- B. Avoid taking folic acid supplements.
- C. Report any signs of infection immediately.
- D. Increase intake of vitamin C-rich foods.
Correct answer: C
Rationale: Correct Answer: The most important instruction for a client taking methotrexate is to report any signs of infection immediately. Methotrexate can suppress the immune system, making the client more susceptible to infections. Early detection and treatment of infections are crucial to prevent complications. Instructing the client to be vigilant for signs of infection empowers them to take prompt action, enhancing their overall safety and well-being.
3. The practical nurse (PN) is obtaining the medical history of a client starting a new prescription for conjugated estrogens PO daily. Which medical condition is not treated by this medication?
- A. Menopausal symptoms
- B. Prostatic cancer
- C. Thromboembolic diseases
- D. Abnormal uterine bleeding
Correct answer: C
Rationale: Conjugated estrogens, such as Premarin, are not used in the treatment of thromboembolic diseases. These medications are contraindicated in conditions predisposing to thromboembolic diseases due to their association with an increased risk of thromboembolism, stroke, pulmonary embolism, and myocardial infarction. Choices A, B, and D are incorrect because conjugated estrogens are commonly prescribed for managing menopausal symptoms, abnormal uterine bleeding, and certain hormone-responsive cancers, but not for thromboembolic diseases.
4. A client with schizophrenia is prescribed risperidone. Which statement by the client indicates the need for further teaching?
- A. I can stop taking this medication once I feel better.
- B. This medication may cause drowsiness.
- C. This medication might make me feel drowsy.
- D. I should avoid alcohol while taking this medication.
Correct answer: A
Rationale: Clients should not stop taking risperidone abruptly once they feel better without consulting their healthcare provider.
5. A client with a history of stroke is prescribed warfarin. The nurse should monitor for which potential side effect?
- A. Bleeding
- B. Weight gain
- C. Headache
- D. Dizziness
Correct answer: A
Rationale: The correct answer is A: Bleeding. Warfarin is an anticoagulant medication that works by thinning the blood. One of the potential side effects of warfarin is an increased risk of bleeding. It is crucial for the nurse to monitor the client for signs of bleeding, such as unusual bruising, blood in the urine or stool, or prolonged bleeding from cuts or gums. Prompt recognition and management of bleeding are essential to prevent complications. Choices B, C, and D are incorrect as weight gain, headache, and dizziness are not common side effects of warfarin. Monitoring for bleeding is a priority due to the anticoagulant properties of warfarin.
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