HESI LPN
HESI Practice Test Pharmacology
1. Phenazopyridine is commonly prescribed for clients with urinary tract infections (UTI). Which statement by the practical nurse describes the purpose for the administration of phenazopyridine?
- A. To alter the pH level of the urine
- B. To reduce the frequency of bladder spasms
- C. To alleviate the painful symptoms caused by the UTI
- D. To prevent bacterial replication and resistance development
Correct answer: C
Rationale: The correct answer is C. Phenazopyridine, a urinary analgesic, is utilized to alleviate the pain associated with urinary tract infections (UTIs) like burning, pain, urgency, and frequent voiding. The administration of phenazopyridine can cause the urine to turn a bright red-orange color. It is recommended to take this medication with food to reduce gastric irritation. Phenazopyridine should only be used for a maximum of 2 days when taken alongside an antibacterial agent, which is typically prescribed for about 2 weeks to treat the underlying infection.
2. The healthcare provider is evaluating the effectiveness of metaproterenol for how do you know it's been effective?
- A. Increased heart rate and blood pressure
- B. Decreased white blood cell count
- C. Decreased wheezing upon auscultation
- D. Decreased respiratory rate
Correct answer: C
Rationale: The effectiveness of metaproterenol, a bronchodilator, is assessed by a decrease in wheezing upon auscultation. Wheezing indicates airway constriction, and a reduction in wheezing signifies improved airflow and bronchodilation due to the medication's action. Therefore, choices A, B, and D are incorrect as they do not directly relate to the expected outcome of metaproterenol therapy.
3. The nurse is studying antacids that contain magnesium and calcium for the pharmacology exam. The student nurse remembers that these antacids should be used with caution in patients with which condition?
- A. Hypertension
- B. Renal failure
- C. Heart failure
- D. Peptic ulcer disease
Correct answer: B
Rationale: Magnesium and calcium can accumulate in patients with renal failure, leading to toxicity.
4. A client with rheumatoid arthritis is prescribed methotrexate. The nurse should include which instruction in the client's teaching plan?
- A. Avoid alcohol while taking this medication.
- B. Take this medication with food to decrease gastrointestinal upset.
- C. Avoid sunlight while taking this medication.
- D. Report any signs of infection to the healthcare provider.
Correct answer: C
Rationale: The correct instruction for a client prescribed methotrexate is to avoid sunlight while taking this medication. Methotrexate can increase sensitivity to sunlight, leading to skin reactions. It is essential for clients to limit sun exposure and use protective measures like sunscreen and clothing coverage to prevent adverse effects. Choices A, B, and D are incorrect because avoiding alcohol, taking with food, and reporting signs of infection are not specific instructions related to methotrexate therapy.
5. A client prescribed glipizide asked why they had to take their insulin orally. How should the practical nurse respond?
- A. Glipizide is not an oral form of insulin and can be used only when some beta cell function is present.
- B. Glipizide is an oral form of insulin and is distributed, metabolized, and excreted in the same manner as insulin.
- C. Glipizide is an oral form of insulin and has the same actions and properties as intermediate insulin.
- D. Glipizide is not an oral form of insulin, but it is effective for those who are resistant to injectable insulins.
Correct answer: A
Rationale: The practical nurse should explain to the client that glipizide is not an oral form of insulin but an oral hypoglycemic agent. Glipizide works by enhancing pancreatic production of insulin when some beta cell function is present. It is not a replacement for insulin but helps the body produce more insulin. Therefore, it can be used when there is still some beta cell function present, unlike insulin which is used when there is a deficiency of endogenous insulin production.
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