HESI RN
HESI Pharmacology Practice Exam
1. A client with chronic renal failure is receiving ferrous sulfate (Feosol). The nurse monitors the client for which common side effect associated with this medication?
- A. Diarrhea
- B. Weakness
- C. Headache
- D. Constipation
Correct answer: D
Rationale: Constipation is a common side effect of iron supplements such as ferrous sulfate. Iron can cause constipation by slowing down the movement of the digestive system and hardening the stool. Patients should be advised to increase their fluid intake, dietary fiber, and physical activity to help alleviate this side effect. Diarrhea (Choice A) is not a common side effect associated with ferrous sulfate. Weakness (Choice B) and headache (Choice C) are not typically linked to this medication.
2. The client with breast cancer is receiving cyclophosphamide (Neosar). The nurse is reinforcing medication instructions and advises the client to:
- A. Take the medication with food.
- B. Increase fluid intake to 2000 to 3000 mL daily.
- C. Decrease sodium intake while taking the medication.
- D. Increase potassium intake while taking the medication.
Correct answer: B
Rationale: The correct answer is to increase fluid intake to 2000 to 3000 mL daily. Cyclophosphamide can cause hemorrhagic cystitis as a toxic effect. By increasing fluid intake, the client can help prevent this complication by promoting frequent urination, which reduces the concentration of the drug and its metabolites in the bladder. This dilution effect can help reduce the risk of bladder toxicity.
3. 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.
4. A client is receiving dietary instructions from a nurse regarding warfarin sodium (Coumadin) therapy. The nurse advises the client to avoid which food item?
- A. Grapes
- B. Spinach
- C. Watermelon
- D. Cottage cheese
Correct answer: B
Rationale: The correct answer is B: Spinach. Spinach is high in vitamin K, which antagonizes the effects of warfarin sodium, an anticoagulant medication. Clients taking warfarin should avoid consuming foods rich in vitamin K, like spinach, to maintain the medication's effectiveness. Grapes (choice A), watermelon (choice C), and cottage cheese (choice D) do not interfere with the effects of warfarin, so they are safe for the client to consume while on warfarin therapy.
5. A healthcare professional prepares to reinforce instructions to a client who is taking allopurinol (Zyloprim). The healthcare professional plans to include which of the following in the instructions?
- A. Instruct the client to drink 3000 mL of fluid per day.
- B. Instruct the client to take the medication with food.
- C. Inform the client that the effect of the medication will occur immediately.
- D. Instruct the client that, if swelling of the lips occurs, this is a normal expected response.
Correct answer: A
Rationale: Allopurinol is an antigout medication that works by reducing the production of uric acid in the body. To prevent kidney stones and promote the excretion of uric acid, increased fluid intake is essential. Instructing the client to drink 3000 mL of fluid per day helps to reduce the risk of kidney stones and assists in the elimination of uric acid, thereby enhancing the effectiveness of allopurinol therapy.
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