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 with type 2 diabetes mellitus is prescribed glipizide (Glucotrol). Which instruction should the nurse include in the teaching plan?
- A. Take the medication before a meal.
- B. Monitor for signs of hypoglycemia.
- C. Avoid alcohol consumption while taking this medication.
- D. Take the medication before bedtime.
Correct answer: B
Rationale: The correct instruction the nurse should include in the teaching plan for a client prescribed glipizide (Glucotrol) is to monitor for signs of hypoglycemia. Glipizide stimulates insulin release from the pancreas, which can lead to hypoglycemia. It is usually taken before a meal, not necessarily on an empty stomach. Alcohol consumption should be avoided to prevent interactions with the medication. Taking the medication before bedtime is not the typical recommendation.
3. A client is taking levothyroxine (Synthroid). The nurse instructs the client to notify the health care provider (HCP) if which of the following occurs?
- A. Fatigue
- B. Tremors
- C. Cold intolerance
- D. Excessively dry skin
Correct answer: B
Rationale: Tremors are a sign of excessive doses of levothyroxine, indicating hyperthyroidism. It is important for the client to report tremors to the healthcare provider to prevent complications associated with overdosing on levothyroxine.
4. Isotretinoin is prescribed for a client with severe acne. Before the administration of this medication, the nurse anticipates that which laboratory test will be prescribed?
- A. Platelet count
- B. Triglyceride level
- C. Complete blood count
- D. White blood cell count
Correct answer: B
Rationale: Before administering Isotretinoin, it is important to check the client's triglyceride levels. Isotretinoin is known to elevate triglyceride levels, hence monitoring them before and periodically during treatment is essential to prevent potential adverse effects.
5. A client is prescribed phenytoin (Dilantin) for seizure control. Which statement by the client indicates an understanding of the medication?
- A. I should brush and floss my teeth regularly.
- B. I should take the medication with antacids.
- C. I can stop taking the medication once my seizures are controlled.
- D. I should avoid drinking milk while taking this medication.
Correct answer: A
Rationale: The correct statement is 'I should brush and floss my teeth regularly.' Phenytoin (Dilantin) can cause gingival hyperplasia, so maintaining good oral hygiene is essential. Taking the medication with antacids can affect its absorption, so it should not be done. It is crucial not to stop taking the medication abruptly, even if seizures are controlled. There is no specific requirement to avoid milk while taking phenytoin (Dilantin).
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