HESI LPN
Pharmacology HESI Practice
1. A client with a diagnosis of schizophrenia is prescribed clozapine. The nurse should monitor the client for which potential side effect?
- A. Agranulocytosis
- B. Dry mouth
- C. Weight gain
- D. Hypersalivation
Correct answer: A
Rationale: The correct answer is Agranulocytosis. Clozapine is known to potentially cause agranulocytosis, a serious condition characterized by a dangerously low white blood cell count. Monitoring white blood cell counts is crucial to detect this side effect early and prevent complications. Choices B, C, and D are incorrect because dry mouth, weight gain, and hypersalivation are not typically associated with clozapine use. While dry mouth can be a common side effect of some antipsychotic medications, it is not specifically linked to clozapine. Weight gain can occur with certain antipsychotics, but clozapine is more commonly associated with metabolic side effects. Hypersalivation is not a common side effect of clozapine.
2. A client diagnosed with seizures is prescribed phenytoin. Which medication instruction should the practical nurse (PN) reinforce to this client?
- A. Maintain consistent sodium intake.
- B. Use sunscreen when outdoors.
- C. Return for monthly urinalysis.
- D. Brush and floss teeth daily.
Correct answer: D
Rationale: The correct answer is to reinforce the instruction to brush and floss teeth daily. Phenytoin therapy can lead to gingival hyperplasia (gum disease), which can be prevented by maintaining good oral hygiene practices such as brushing and flossing daily. Choices A, B, and C are incorrect because they are not directly related to the side effects or management of phenytoin therapy. Maintaining consistent sodium intake is not a specific concern with phenytoin. Using sunscreen when outdoors is important to prevent sunburn but is not directly related to phenytoin therapy. Returning for monthly urinalysis may be necessary for other medications, but it is not specifically required for monitoring phenytoin therapy.
3. A client with a history of stroke is prescribed clopidogrel. The nurse should monitor for which potential side effect?
- A. Bleeding
- B. Weight gain
- C. Nausea
- D. Headache
Correct answer: A
Rationale: When a client with a history of stroke is prescribed clopidogrel, the nurse should monitor for potential side effects, especially bleeding. Clopidogrel is an antiplatelet medication that works by preventing blood clots. One of the major risks associated with clopidogrel is an increased tendency to bleed. Therefore, monitoring for signs of bleeding, such as easy bruising, blood in stool or urine, or prolonged bleeding from minor cuts, is crucial to ensure patient safety and early intervention if needed.
4. A client who is prescribed sildenafil for pulmonary hypertension calls the clinic for advice. Which condition should the practical nurse notify the health care provider immediately and instruct the client to stop taking the medication?
- A. The client is experiencing vision and hearing loss.
- B. The client has an erection lasting longer than 4 hours.
- C. The client is complaining of nasal congestion.
- D. The client is complaining of feeling flushed.
Correct answer: A
Rationale: The correct answer is A. If a client prescribed sildenafil for pulmonary hypertension experiences vision and/or hearing loss or an erection lasting more than 4 hours, the practical nurse should instruct the client to discontinue the medication immediately and notify the health care provider. These symptoms could indicate serious side effects that require prompt medical attention to prevent complications. Choices B, C, and D are incorrect because an erection lasting more than 2 hours (not 4 hours as stated in choice B) is a critical adverse effect that warrants immediate medical attention. Nasal congestion (choice C) and feeling flushed (choice D) are common side effects of sildenafil and typically do not necessitate immediate discontinuation of the medication or emergency intervention.
5. What information should the practical nurse provide to a female client who started taking an oral sulfonamide for a urinary tract infection the previous day and reports slight anorexia, while also experiencing urinary frequency?
- A. Take the medication with an antacid instead of cranberry juice to reduce the anorexia.
- B. Continue to take the medication with a sip of cranberry juice, restricting fluids until the frequency is controlled.
- C. Continue to drink cranberry juice, but take the medicine on an empty stomach with a full glass of water.
- D. Take the medication with a spoonful of ice cream or applesauce and avoid drinking cranberry juice.
Correct answer: C
Rationale: The practical nurse should advise the client to take sulfonamides with a full glass of water to help prevent crystalluria. It is essential to take the medication on an empty stomach, ideally 1 hour before eating or 2 hours after eating to maximize its absorption and effectiveness. Continuing to drink cranberry juice is beneficial, but it is important to take the medicine separately to enhance its therapeutic action.
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