HESI LPN
HESI Fundamentals Exam
1. A client requires gastric decompression, and a nurse is inserting an NG tube. Which action should the nurse take to verify proper placement of the tube?
- A. Assess the client for a gag reflex
- B. Measure the pH of the gastric aspirate
- C. Place the end of the NG tube in water to observe for bubbling
- D. Auscultate 2.5 cm (1 in) above the umbilicus while injecting 15 mL of sterile water
Correct answer: B
Rationale: Measuring the pH of the gastric aspirate is the most reliable method to confirm proper placement of an NG tube. Gastric fluid has an acidic pH, typically ranging from 1 to 5. Assessing the client for a gag reflex (choice A) is important for airway protection but does not confirm tube placement. Placing the NG tube in water to observe for bubbling (choice C) is incorrect and not a reliable method for verifying placement. Auscultating 2.5 cm above the umbilicus while injecting sterile water (choice D) is an outdated method and is not recommended for verifying NG tube placement.
2. A client with schizophrenia is being treated with clozapine (Clozaril). What laboratory test is most important for the nurse to monitor?
- A. Liver function tests
- B. Kidney function tests
- C. White blood cell count
- D. Blood glucose levels
Correct answer: C
Rationale: The correct answer is C: White blood cell count. Clozapine can lead to agranulocytosis, a severe drop in white blood cells, which can be life-threatening. Monitoring the white blood cell count is crucial to detect this condition early. Choices A, B, and D are incorrect because while liver and kidney function tests are important in monitoring other aspects of health, the most critical concern with clozapine therapy is the risk of agranulocytosis, making monitoring white blood cell count the priority.
3. During an admission history assessment, a client informs the nurse about consuming herbal tea every afternoon at work to alleviate stress. What ingredient is likely present in the tea?
- A. Chamomile
- B. Ginseng
- C. Ginger
- D. Echinacea
Correct answer: A
Rationale: The correct answer is A: Chamomile. Chamomile tea is commonly used for stress relief. Choice B, Ginseng, is not typically used in teas for stress relief but for energy and immune system support. Choice C, Ginger, is more commonly used for digestive health and nausea. Choice D, Echinacea, is often used to boost the immune system. Therefore, in the context of stress relief, Chamomile is the most appropriate ingredient.
4. The nurse is teaching a client with gastroesophageal reflux disease (GERD) about dietary modifications. Which food should the client avoid?
- A. Applesauce
- B. White rice
- C. Coffee
- D. Bananas
Correct answer: C
Rationale: The correct answer is C: Coffee. Coffee should be avoided by clients with GERD as it can relax the lower esophageal sphincter, leading to an increase in GERD symptoms. Choices A, B, and D are not directly associated with worsening GERD symptoms and can be included in moderation in the diet of a client with GERD.
5. A client asks a nurse about the purpose of advance directives.
- A. Indicate a form of treatment a client is willing to accept.
- B. Specify the client's preferred hospital for treatment.
- C. Determine the client's daily medication schedule.
- D. Outline the client's financial status and insurance coverage.
Correct answer: A
Rationale: The correct answer is A: Advance directives serve to indicate the forms of medical treatment a client wishes to receive or decline in the event they are unable to communicate their preferences. This legal document allows individuals to make decisions about their future healthcare. Choice B is incorrect as advance directives do not specify the client's preferred hospital for treatment. Choice C is incorrect as advance directives do not determine the client's daily medication schedule; this is typically addressed in a medication administration record. Choice D is incorrect as advance directives do not outline the client's financial status and insurance coverage, but rather focus on healthcare treatment preferences.