HESI RN
Pharmacology HESI
1. A client who is receiving digoxin (Lanoxin) daily has a serum potassium level of 3.0 mEq/L and is complaining of anorexia. A healthcare provider prescribes a digoxin level to rule out digoxin toxicity. A nurse checks the results, knowing that which of the following is the therapeutic serum level (range) for digoxin?
- A. 3 to 5 ng/mL
- B. 0.5 to 2 ng/mL
- C. 1.2 to 2.8 ng/mL
- D. 3.5 to 5.5 ng/mL
Correct answer: B
Rationale: The therapeutic serum level for digoxin ranges from 0.5 to 2 ng/mL. This range is considered optimal for therapeutic effects while minimizing the risk of toxicity. Levels above 2 ng/mL may lead to digoxin toxicity, which can manifest as anorexia among other symptoms. Therefore, the nurse should be vigilant in monitoring the digoxin levels to ensure the client's safety and therapeutic effectiveness of the medication.
2. A nurse preparing a client for surgery reviews the client's medication record. The client is to be nothing per mouth (NPO) after midnight. Which of the following medications, if noted on the client's record, should the nurse question?
- A. Cyclobenzaprine (Flexeril)
- B. Alendronate (Fosamax)
- C. Allopurinol (Zyloprim)
- D. Prednisone
Correct answer: D
Rationale: Prednisone is a corticosteroid that can cause adrenal atrophy, reducing the body's ability to withstand stress. During surgery, the dosage may need to be adjusted due to its impact on the body's stress response. Choices A, B, and C are not typically contraindicated before surgery and do not have the same potential impact on the body's stress response.
3. A client has been prescribed furosemide (Lasix), and the nurse is monitoring for adverse effects associated with this medication. Which of the following should the nurse recognize as a potential adverse effect? Select one that doesn't apply.
- A. Nausea
- B. Tinnitus
- C. Hypotension
- D. Hypokalemia
Correct answer: A
Rationale: Furosemide is a loop diuretic that can lead to adverse effects such as tinnitus, hypotension, and hypokalemia. While nausea is a common side effect of many medications, it is not typically associated with furosemide. Therefore, the nurse should recognize nausea as a potential adverse effect that doesn't apply to furosemide.
4. A client who has been newly diagnosed with diabetes mellitus has been stabilized with daily insulin injections. Which information should the nurse teach when carrying out plans for discharge?
- A. Keep insulin vials refrigerated at all times.
- B. Rotate the insulin injection sites systematically.
- C. Increase the amount of insulin before unusual exercise.
- D. Monitor the urine acetone level to determine the insulin dosage.
Correct answer: B
Rationale: When a client is stabilized with daily insulin injections, it is crucial to rotate the injection sites systematically. This practice helps prevent the development of lipodystrophy, which can affect insulin absorption and lead to inconsistent glucose control. Additionally, rotating sites minimizes discomfort and tissue damage, ensuring optimal insulin delivery and effectiveness.
5. 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.
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