HESI RN
Pharmacology HESI
1. A client is taking phenytoin (Dilantin) for seizure control, and a sample for a serum drug level is drawn. Which of the following indicates a therapeutic serum drug range?
- A. 5 to 10 mcg/mL
- B. 10 to 20 mcg/mL
- C. 20 to 30 mcg/mL
- D. 30 to 40 mcg/mL
Correct answer: B
Rationale: The correct therapeutic serum drug level range for phenytoin (Dilantin) is 10 to 20 mcg/mL. This range is considered optimal for seizure control while minimizing the risk of toxicity. Monitoring drug levels helps ensure that the client is within the therapeutic range for effective treatment.
2. A client taking fexofenadine (Allegra) is scheduled for allergy skin testing and tells the nurse in the healthcare provider's office that a dose was taken this morning. The nurse determines that:
- A. The client should reschedule the appointment.
- B. A lower dose of allergen will need to be injected.
- C. A higher dose of allergen will need to be injected.
- D. The client should have the skin test read a day later than usual.
Correct answer: A
Rationale: Fexofenadine, an antihistamine, can cause false-negative readings in allergy skin testing and should be discontinued 3 days prior. Therefore, the client should reschedule the appointment to ensure accurate test results.
3. A client is being educated about the use of sertraline (Zoloft) for depression. Which statement by the client indicates a need for further teaching?
- A. I should take the medication with a high-protein meal.
- B. I may experience dizziness when getting up quickly.
- C. I might notice a decrease in my sex drive.
- D. I should report any thoughts of self-harm to my healthcare provider.
Correct answer: A
Rationale: The statement 'I should take the medication with a high-protein meal' indicates a need for further teaching as sertraline (Zoloft) should not be taken with a high-protein meal due to potential interference with medication absorption. Choices B, C, and D are correct statements associated with the use of sertraline for depression. It is common to experience dizziness when quickly getting up, notice a decrease in sex drive, and important to report any thoughts of self-harm to the healthcare provider while on this medication.
4. After the initial dose, which of the following is the priority assessment for a client being treated for acute congestive heart failure with intravenously administered bumetanide?
- A. Monitoring weight loss
- B. Monitoring temperature
- C. Monitoring blood pressure
- D. Monitoring potassium level
Correct answer: C
Rationale: The correct answer is monitoring blood pressure. Bumetanide is a loop diuretic, and monitoring blood pressure is crucial as hypotension is a common side effect. Hypotension can further worsen the condition of a patient with congestive heart failure, so assessing and managing blood pressure is a priority after administering bumetanide.
5. A client with diabetes mellitus visits a health care clinic. The client's diabetes mellitus was previously well controlled with daily glyburide (DiaBeta). However, the fasting blood glucose level has recently been in the range of 180 to 200 mg/dL. Which medication, if added to the client's regimen, may have contributed to the hyperglycemia?
- A. Prednisone
- B. Phenelzine (Nardil)
- C. Atenolol (Tenormin)
- D. Allopurinol (Zyloprim)
Correct answer: A
Rationale: Prednisone is known to reduce the effectiveness of oral hypoglycemic medications like glyburide and insulin, which can result in hyperglycemia. Therefore, the addition of prednisone to the client's regimen could have contributed to the elevated fasting blood glucose levels observed.
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