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 with a history of stroke is prescribed clopidogrel. The nurse should monitor the client for which potential side effect?
- A. Bleeding
- B. Bruising
- C. Nausea
- D. Headache
Correct answer: A
Rationale: Clopidogrel is an antiplatelet medication that works to prevent blood clots, but it can also increase the risk of bleeding. Therefore, the nurse should monitor the client for signs of bleeding, such as easy bruising, prolonged bleeding from cuts, blood in urine or stool, or unusual bleeding from the gums. Prompt identification and management of bleeding are crucial to prevent complications. Choices B, C, and D are incorrect because while bruising and other symptoms can occur as a result of bleeding, they are not the primary side effect to monitor for with clopidogrel. Nausea and headache are less commonly associated with clopidogrel use compared to bleeding.
3. A client is prescribed clopidogrel. The nurse should monitor for which potential side effect of this medication?
- A. Nausea and vomiting
- B. Bleeding or bruising
- C. Gastrointestinal bleeding
- D. Fatigue
Correct answer: C
Rationale: When a client is prescribed clopidogrel, the nurse should monitor for potential side effects related to bleeding due to its antiplatelet effect. Gastrointestinal bleeding is a severe side effect associated with clopidogrel use. Monitoring for signs of gastrointestinal bleeding, such as black, tarry stools or vomiting blood, is essential to prevent serious complications.
4. A client is prescribed metoprolol. The nurse should monitor for which common side effect of this medication?
- A. Dizziness
- B. Fatigue
- C. Orthostatic hypotension
- D. Headache
Correct answer: A
Rationale: The correct answer is A: Dizziness. Metoprolol, a beta-blocker, can lead to dizziness as a common side effect due to its mechanism of action in reducing heart rate and blood pressure. This effect can cause a sensation of lightheadedness or unsteadiness, particularly when standing up quickly. While fatigue, orthostatic hypotension, and headache are potential side effects of metoprolol, dizziness is commonly observed and should be closely monitored by the nurse to ensure patient safety.
5. A client who takes metformin for diabetes mellitus type 2 is nothing by mouth (NPO) for surgery. What pre-op prescription should the practical nurse (PN) anticipate for this client's glucose management?
- A. NPO except for metformin and regular snacks
- B. NPO except for oral antidiabetic agent
- C. Novolin-N insulin subcutaneously twice daily
- D. Regular insulin subcutaneously per sliding scale
Correct answer: D
Rationale: When a client taking metformin for diabetes mellitus type 2 is NPO for surgery, it is crucial to manage their glucose levels effectively. The best approach in this situation is to prescribe regular insulin subcutaneously according to a sliding scale based on the client's blood glucose levels. This method allows for precise adjustment of insulin doses to maintain blood glucose within the target range while the client is unable to take oral medications. Choices A and B are incorrect because metformin is typically held when a client is NPO, and oral antidiabetic agents may not provide sufficient glucose control. Choice C is incorrect as Novolin-N insulin given twice daily may not offer the flexibility needed for glucose management in a surgical setting where the client's intake is restricted.
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