HESI LPN
CAT Exam Practice Test
1. The practical nurse (PN) is assigned to work with three registered nurses (RN) who are caring for neurologically compromised clients. The client with which change in status is best to assign to the PN?
- A. Diabetic ketoacidosis whose Glasgow Coma Scale score changed from 10 to 7
- B. Subdural hematoma whose blood pressure changed from 150/80 mmHg to 170/60 mmHg
- C. Myxedema coma whose blood pressure changed from 80/50 mmHg to 70/40 mmHg
- D. Viral meningitis whose temperature changed from 101° F (38.3 C) to 102° F (38.9C)
Correct answer: D
Rationale: The correct answer is D because viral meningitis with a slight increase in temperature is less acute and complex compared to the other conditions. This change in temperature does not indicate a critical or urgent situation requiring immediate attention or intervention beyond the scope of a practical nurse. Choices A, B, and C present more significant changes in health status such as a decrease in Glasgow Coma Scale score, an increase in intracranial pressure indicated by blood pressure changes, and a significant drop in blood pressure, respectively. These changes require closer monitoring and intervention by registered nurses due to the higher acuity and complexity of care needed for these conditions.
2. To evaluate the medication’s effectiveness in a client with a respiratory tract infection, which laboratory values should the nurse monitor?
- A. White blood cell (WBC) count
- B. Sputum culture and sensitivity
- C. Droplet precautions
- D. Protective environment
Correct answer: A
Rationale: The correct answer is A: White blood cell (WBC) count. Monitoring the WBC count helps assess the overall response to infection and the effectiveness of the antibiotic. Sputum culture and sensitivity (choice B) are also important to confirm if the antibiotic is targeting the specific pathogen. Choices C and D, droplet precautions and protective environment, are not laboratory values but rather infection control measures that do not directly evaluate the medication's effectiveness in treating the infection.
3. An 8-year-old child who weighs 60 pounds receives an order for Polycilin (Ampicillin) suspension 25 mg/kg/day divided into a dose every 8 hours. The medication is labeled '125 mg/5 ml'. How many ml should the nurse administer per dose every 8 hours?
- A. 5
- B. 10
- C. 15
- D. 20
Correct answer: A
Rationale: Calculate the daily dose first: 60 pounds x 25 mg/kg = 1500 mg/day. Divide by 3 doses = 500 mg/dose. Convert to mL: (500 mg / 125 mg) x 5 ml = 20 ml. However, the question asks for the dose per administration every 8 hours, which is 1/3 of the daily dose. So, the correct calculation should be (20 ml / 3) = 6.67 ml, which rounds to 5 ml. Therefore, the correct answer is 5 ml. Choice B (10 ml) is incorrect because it doesn't consider the frequency of dosing. Choice C (15 ml) is incorrect as it overestimates the dose. Choice D (20 ml) is incorrect as it represents the total daily dose, not the dose per administration every 8 hours.
4. A client prescribed warfarin is being taught about dietary modifications by a nurse. Which statement by the client indicates understanding of the teaching?
- A. ''I need to avoid foods high in vitamin C.''
- B. ''I should eat a consistent amount of vitamin K each day.''
- C. ''I can eat as many leafy greens as I want.''
- D. ''I should not worry about any changes in my diet.''
Correct answer: B
Rationale: The correct answer is B. Consistency in vitamin K intake is crucial for clients on warfarin to maintain stable anticoagulation levels. Option A is incorrect as vitamin C does not directly interact with warfarin. Option C is incorrect because although leafy greens are high in vitamin K, excessive consumption can affect warfarin's effectiveness. Option D is incorrect as any changes in diet, particularly in vitamin K intake, can impact the efficacy of warfarin.
5. Following rectal surgery, a female client is very anxious about the pain she may experience during defecation. The nurse should collaborate with the healthcare provider to administer which type of medication?
- A. Bulk-forming agent
- B. Antianxiety agent
- C. Stool softener
- D. Stimulant cathartic
Correct answer: C
Rationale: After rectal surgery, a stool softener is the most appropriate medication to help prevent pain and straining during defecation. Stool softeners work by increasing the water content of the stool, making it easier to pass without discomfort. Bulk-forming agents (Choice A) help add mass to the stool but may not address the immediate post-operative discomfort. Antianxiety agents (Choice B) would address the anxiety but not the physical discomfort. Stimulant cathartics (Choice D) are not recommended after rectal surgery as they can cause cramping and increased bowel movements, potentially exacerbating pain.
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