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 histamine (H2)-receptor antagonist will be prescribed for a client. The nurse understands that which medications are H2-receptor antagonists? Select one that doesn't apply.
- A. Nizatidine (Axid)
- B. Ranitidine (Zantac)
- C. Famotidine (Pepcid)
- D. Ibuprofen (Motrin)
Correct answer: D
Rationale: H2-receptor antagonists like Nizatidine, Ranitidine, and Famotidine are used to suppress gastric acid secretion, relieve heartburn symptoms, and prevent complications of peptic ulcer disease. Ibuprofen, on the other hand, is a nonsteroidal anti-inflammatory drug (NSAID) commonly used for pain relief and inflammation, but it is not an H2-receptor antagonist. It is essential to differentiate between these medication classes to ensure appropriate treatment for gastrointestinal conditions.
3. A client is prescribed calcium gluconate after thyroidectomy. The medication is most likely prescribed to:
- A. Treat thyroid storm.
- B. Prevent cardiac irritability.
- C. Treat hypocalcemic tetany.
- D. Stimulate the release of parathyroid hormone.
Correct answer: C
Rationale: After a thyroidectomy, the parathyroid glands can be inadvertently removed or damaged, leading to a decrease in calcium levels and potentially causing hypocalcemic tetany. Calcium gluconate is given to supplement calcium levels and prevent or treat hypocalcemia-related symptoms, such as muscle spasms and tetany.
4. A client who has begun taking fosinopril (Monopril) is very distressed, telling the nurse that he cannot taste food normally since beginning the medication 2 weeks ago. The nurse provides the best support to the client by:
- A. Telling the client not to take the medication with food
- B. Suggesting that the client taper the dose until taste returns to normal
- C. Informing the client that impaired taste is expected and generally disappears in 2 to 3 months
- D. Requesting that the health care provider (HCP) change the prescription to another brand of angiotensin-converting enzyme (ACE) inhibitor
Correct answer: C
Rationale: The correct answer is to inform the client that impaired taste is an expected side effect of ACE inhibitors like fosinopril, such as Monopril, and typically resolves within 2 to 3 months. It is essential for the nurse to offer reassurance and education to the client about this common side effect to alleviate distress and encourage compliance with the medication regimen.
5. The client has been taking omeprazole (Prilosec) for 4 weeks. The ambulatory care nurse evaluates that the client is receiving the optimal intended effect of the medication if the client reports the absence of which symptom?
- A. Diarrhea
- B. Heartburn
- C. Flatulence
- D. Constipation
Correct answer: B
Rationale: Omeprazole, a proton pump inhibitor, is used as an antiulcer agent to reduce gastric acid secretion. The optimal intended effect of omeprazole is the relief of pain and discomfort associated with gastric irritation, commonly referred to as heartburn. Therefore, the absence of heartburn indicates that the medication is working effectively in managing the client's gastric condition.
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