HESI RN
HESI Pharmacology Practice Exam
1. The camp nurse asks the children preparing to swim in the lake if they have applied sunscreen. The nurse reminds the children that chemical sunscreens are most effective when applied:
- A. Immediately before swimming
- B. 15 minutes before exposure to the sun
- C. Immediately before exposure to the sun
- D. At least 30 minutes before exposure to the sun
Correct answer: D
Rationale: Chemical sunscreens are most effective when applied at least 30 minutes before exposure to the sun to allow them to penetrate the skin and provide optimal protection. Applying sunscreen immediately before swimming (Choice A) or immediately before exposure to the sun (Choice C) may not provide sufficient time for the sunscreen to be absorbed and offer proper protection. Applying sunscreen 15 minutes before sun exposure (Choice B) is also not ideal as it may not allow enough time for the sunscreen to work effectively. Therefore, the correct answer is to apply chemical sunscreen at least 30 minutes before exposure to the sun to ensure it can be absorbed and offer the intended protection. It is important to reapply sunscreen after swimming or sweating to maintain its effectiveness.
2. A client is receiving morphine sulfate for pain management. Which assessment finding requires immediate action?
- A. Constipation
- B. Drowsiness
- C. Respiratory rate of 10 breaths per minute
- D. Nausea
Correct answer: C
Rationale: A respiratory rate of 10 breaths per minute indicates respiratory depression, a serious side effect of morphine sulfate that can lead to respiratory compromise and requires immediate intervention. Constipation, drowsiness, and nausea are common side effects of morphine but are not immediately life-threatening compared to respiratory depression. Monitoring and addressing a low respiratory rate are crucial in preventing further respiratory distress or failure.
3. An older client recently has been taking cimetidine (Tagamet). The nurse monitors the client for which most frequent central nervous system side effect of this medication?
- A. Tremors
- B. Dizziness
- C. Confusion
- D. Hallucinations
Correct answer: C
Rationale: Older clients are particularly vulnerable to central nervous system side effects of cimetidine. The most frequent side effect is confusion. It is crucial for nurses to be vigilant in monitoring for confusion as it can impact the client's safety and well-being. While tremors, dizziness, and hallucinations are possible side effects, confusion is the most common in older clients taking cimetidine.
4. A client is receiving morphine sulfate subcutaneously for pain. Because morphine sulfate has been prescribed for this client, which nursing action would be included in the plan of care?
- A. Encourage fluid intake.
- B. Monitor the client's temperature.
- C. Maintain the client in a supine position.
- D. Encourage the client to cough and deep breathe.
Correct answer: D
Rationale: Morphine sulfate suppresses the cough reflex, which can lead to the retention of secretions in the lungs. Encouraging the client to cough and deep breathe helps prevent pneumonia by clearing the airways of any accumulated secretions. This intervention is crucial in clients receiving morphine sulfate to maintain optimal respiratory function.
5. A nurse is monitoring a client receiving lithium carbonate for bipolar disorder. Which finding should the nurse report immediately to the healthcare provider?
- A. Increased thirst
- B. Fine hand tremors
- C. Frequent urination
- D. Persistent vomiting
Correct answer: D
Rationale: Persistent vomiting can be a sign of lithium toxicity, which requires immediate medical attention. Increased thirst, fine hand tremors, and frequent urination are common side effects of lithium.
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