HESI LPN
Pharmacology HESI Practice
1. A client is prescribed an antacid for the treatment of peptic ulcer disease. What is the action of this medication that is effective in treating the client's ulcer?
- A. Decrease in the production of gastric secretions
- B. Production of an adherent barrier over the ulcer
- C. Maintenance of a gastric pH of 3.5 or above
- D. Decrease in the gastric motor activity
Correct answer: C
Rationale: The correct answer is C. Antacids work by neutralizing gastric acids and maintaining a gastric pH of 3.5 or above. This pH level is crucial to prevent the activation of pepsinogen, a precursor to pepsin, which can further damage the ulcer. Choice A is incorrect because antacids do not directly decrease the production of gastric secretions; they neutralize existing acid. Choice B is incorrect as antacids do not form a physical barrier over the ulcer but rather neutralize the acid around it. Choice D is also incorrect as antacids do not affect gastric motor activity but focus on reducing acidity in the stomach.
2. A client whose seizure disorder has been managed with phenytoin is admitted to the emergency department with status epilepticus. Which drug should the practical nurse anticipate being prescribed for administration to treat these seizures?
- A. Phenytoin
- B. Diazepam
- C. Phenobarbital
- D. Carbamazepine
Correct answer: B
Rationale: In the management of status epilepticus, which is a life-threatening condition of prolonged seizures, rapid intervention is crucial. Diazepam is the drug of choice for treating status epilepticus due to its fast onset of action and effectiveness in stopping seizures. It acts by enhancing the inhibitory neurotransmitter GABA to suppress seizure activity quickly. Phenytoin, although used for long-term seizure control, has a slower onset of action and is not the first-line medication for managing status epilepticus.
3. A client with chronic kidney disease is prescribed lanthanum carbonate. The nurse should monitor for which potential side effect?
- A. Hypercalcemia
- B. Hypocalcemia
- C. Hyperkalemia
- D. Hypokalemia
Correct answer: A
Rationale: Lanthanum carbonate is prescribed in chronic kidney disease to bind dietary phosphorus in the gastrointestinal tract. This action can lead to decreased phosphorus absorption and potential hypercalcemia due to the increased serum calcium levels. Therefore, the nurse should monitor the client for signs and symptoms of hypercalcemia, such as confusion, fatigue, and muscle weakness. Choices B, C, and D are incorrect as lanthanum carbonate's mechanism of action does not lead to hypocalcemia, hyperkalemia, or hypokalemia.
4. A client with a history of deep vein thrombosis is prescribed rivaroxaban. The nurse should monitor for which potential adverse effect?
- A. Increased risk of bleeding
- B. Decreased risk of bleeding
- C. Increased risk of infection
- D. Decreased risk of infection
Correct answer: A
Rationale: When a client with a history of deep vein thrombosis is prescribed rivaroxaban, the nurse should monitor for signs of bleeding as rivaroxaban increases the risk of bleeding. Common adverse effects of rivaroxaban include bleeding events, such as easy bruising, prolonged bleeding from cuts, or blood in the urine or stool. It is crucial for the nurse to assess for these signs to prevent complications and ensure the client's safety. Choices B, C, and D are incorrect because rivaroxaban does not decrease the risk of bleeding, increase the risk of infection, or decrease the risk of infection. Monitoring for bleeding is essential due to the anticoagulant properties of rivaroxaban.
5. A client with a history of myocardial infarction is prescribed atorvastatin. The nurse should monitor the client for which potential adverse effect?
- A. Liver damage
- B. Kidney damage
- C. Muscle pain
- D. Increased appetite
Correct answer: C
Rationale: The correct answer is C: Muscle pain. Atorvastatin can cause muscle pain, which may indicate rhabdomyolysis, a serious adverse effect. Rhabdomyolysis is a condition where muscle breakdown releases a protein (myoglobin) into the bloodstream, potentially leading to kidney damage. Liver damage (choice A) is a less common side effect of atorvastatin compared to muscle pain. Kidney damage (choice B) is not a direct adverse effect of atorvastatin but can occur indirectly if rhabdomyolysis is severe. Increased appetite (choice D) is not a known adverse effect of atorvastatin.
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