HESI RN
Pharmacology HESI Quizlet
1. A client who is taking hydrochlorothiazide (HydroDIURIL, HCTZ) has been started on triamterene (Dyrenium) as well. The client asks the nurse why both medications are required. The nurse formulates a response, based on the understanding that:
- A. Both are weak potassium-losing diuretics.
- B. The combination of these medications prevents renal toxicity.
- C. Hydrochlorothiazide is less expensive, so using a combination of diuretics is cost-effective.
- D. Triamterene is a potassium-sparing diuretic, whereas hydrochlorothiazide is a potassium-losing diuretic.
Correct answer: D
Rationale: The combination of triamterene and hydrochlorothiazide is used because triamterene is a potassium-sparing diuretic, which helps retain potassium, while hydrochlorothiazide is a potassium-losing diuretic, which promotes potassium excretion. This combination helps balance potassium levels in the body, preventing imbalances that can occur when using potassium-losing diuretics alone.
2. Megestrol acetate (Megace), an antineoplastic medication, is prescribed for a client with metastatic endometrial carcinoma. The nurse reviews the client's history and contacts the registered nurse if which diagnosis is documented in the client's history?
- A. Gout
- B. Asthma
- C. Thrombophlebitis
- D. Myocardial infarction
Correct answer: C
Rationale: Megestrol acetate can increase the risk of thromboembolic events. Clients with a history of thrombophlebitis should not receive this medication due to the increased risk of thromboembolic events. Therefore, the nurse should contact the registered nurse if thrombophlebitis is documented in the client's history to ensure appropriate medication management.
3. A client is instructed to take levothyroxine (Synthroid). The medication should be taken:
- A. With food
- B. At lunchtime
- C. On an empty stomach
- D. At bedtime with a snack
Correct answer: C
Rationale: Levothyroxine should be taken on an empty stomach to enhance absorption. Taking it with food or at bedtime can interfere with its absorption, reducing its effectiveness. Therefore, it is essential for the client to take levothyroxine on an empty stomach to ensure optimal therapeutic outcomes.
4. A client is receiving furosemide (Lasix) and is being discharged. What should the nurse include in the teaching plan?
- A. Consume potassium-rich foods.
- B. Take the medication in the morning.
- C. Change positions slowly to prevent dizziness.
- D. Maintain an adequate fluid intake.
Correct answer: C
Rationale: The correct answer is to instruct the client to change positions slowly to prevent dizziness. Furosemide (Lasix) is a diuretic that can lead to orthostatic hypotension, causing dizziness. Consuming potassium-rich foods is essential to prevent hypokalemia when taking furosemide. Taking the medication in the morning helps reduce the need for frequent urination at night. Encouraging the client to maintain an adequate fluid intake is crucial to prevent dehydration while on this medication.
5. 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.
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