HESI RN
HESI Pharmacology Quizlet
1. 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).
2. A client with diabetes mellitus is prescribed Humulin NPH insulin. The client asks the nurse how to store unopened vials of insulin. The nurse instructs the client to:
- A. Freeze the insulin.
- B. Refrigerate the insulin.
- C. Store the insulin in a dark, dry place.
- D. Keep the insulin at room temperature.
Correct answer: B
Rationale: Unopened vials of insulin should be stored in the refrigerator until needed. Freezing insulin can damage it, affecting its efficacy. Storing insulin in a dark, dry place or at room temperature is not recommended as it can lead to degradation of the insulin. Refrigeration helps maintain the stability and effectiveness of insulin.
3. 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.
4. Oxybutynin chloride (Ditropan XL) is prescribed for a client with neurogenic bladder. Which sign would indicate a possible toxic effect related to this medication?
- A. Pallor
- B. Drowsiness
- C. Bradycardia
- D. Restlessness
Correct answer: D
Rationale: Signs of toxicity related to oxybutynin chloride (Ditropan XL) include central nervous system excitation, such as nervousness, restlessness, hallucinations, and irritability. Other signs of toxicity may include hypotension or hypertension, confusion, tachycardia, a flushed or red face, and signs of respiratory depression. Restlessness is a sign of central nervous system excitation, which can indicate a possible toxic effect of this medication.
5. A client is receiving sulfisoxazole. Which of the following should be included in the list of instructions?
- A. Restrict fluid intake.
- B. Maintain a high fluid intake.
- C. If the urine turns dark brown, call the healthcare provider (HCP) immediately.
- D. Decrease the dosage when symptoms are improving to prevent an allergic response.
Correct answer: B
Rationale: When a client is taking sulfisoxazole, it is important to maintain a high fluid intake. Each dose of sulfisoxazole should be taken with a full glass of water, as the medication is more soluble in alkaline urine. Restricting fluid intake is not recommended as it can lead to inadequate hydration. Dark brown urine may be a side effect of some forms of sulfisoxazole but does not necessarily warrant immediate notification of the healthcare provider unless accompanied by other concerning symptoms. Decreasing the dosage when symptoms improve is not advised as it may lead to treatment failure or the development of resistance.
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