HESI LPN
CAT Exam Practice Test
1. Which type of Leukocyte is involved with allergic responses and the destruction of parasitic worms?
- A. Neutrophils
- B. Lymphocytes
- C. Eosinophils
- D. Monocytes
Correct answer: C
Rationale: Eosinophils are the correct answer. Eosinophils are specialized white blood cells that play a crucial role in allergic responses and combating parasitic infections. They release substances to destroy parasites and modulate allergic reactions. Neutrophils (Choice A) are mainly involved in fighting bacterial infections. Lymphocytes (Choice B) play a key role in the immune response, including antibody production, but are not primarily responsible for combating parasites or allergic responses. Monocytes (Choice D) are involved in immune defense, differentiating into macrophages or dendritic cells, but they are not mainly associated with allergic responses or parasitic worm destruction.
2. A male client with diabetes mellitus takes NPH/regular 70/30 insulin before meals and azithromycin PO daily, using medication he brought from home. When the nurse delivers his breakfast tray, the client tells the nurse that he took his insulin but forgot to take his daily dose of azithromycin an hour before breakfast as instructed. What action should the nurse implement?
- A. Provide a PRN dose of an antacid to take with the azithromycin right after breakfast
- B. Offer to obtain a new breakfast tray in an hour so the client can take the azithromycin
- C. Instruct the client to eat his breakfast and take the azithromycin two hours after eating
- D. Tell the client to skip that day's dose and resume taking the azithromycin the next day
Correct answer: C
Rationale: Azithromycin should ideally be taken on an empty stomach; however, if taken after breakfast, it should not affect its efficacy. Instructing the client to eat his breakfast and take the azithromycin two hours after eating allows for proper absorption without compromising its effectiveness. Providing an antacid with azithromycin is not necessary in this case. Offering a new breakfast tray in an hour or skipping the dose is not the best course of action as it may lead to missed doses and potential effectiveness issues.
3. A client with chronic alcoholism is admitted with a decreased serum magnesium level. Which snack option should the nurse recommend to this client?
- A. Cheddar cheese and crackers
- B. Carrot and celery sticks
- C. Beef bologna sausage slices
- D. Dry roasted almonds
Correct answer: D
Rationale: Dry roasted almonds are the most suitable snack option for a client with chronic alcoholism and a decreased serum magnesium level because they are high in magnesium. Magnesium is essential in addressing the deficiency. Cheddar cheese and crackers (Choice A) do not contain as much magnesium as almonds. Carrot and celery sticks (Choice B) are healthy choices but do not provide a significant amount of magnesium. Beef bologna sausage slices (Choice C) are not a good choice as processed meats are not rich in magnesium.
4. A client with cervical cancer is hospitalized for insertion of a sealed internal cervical radiation implant. While providing care, the nurse finds the radiation implant in the bed. What action should the nurse take?
- A. Call the radiology department
- B. Reinsert the implant into the vagina
- C. Apply double gloves to retrieve the implant for disposal
- D. Place the implant in a lead container using long-handled forceps
Correct answer: D
Rationale: The correct action for the nurse to take when finding a radiation implant in the bed is to place the implant in a lead container using long-handled forceps. This action is crucial to minimize radiation exposure to both the patient and healthcare providers and ensure the safe disposal of the radioactive material. Calling the radiology department (choice A) may lead to unnecessary delays in addressing the immediate safety concern. Reinserting the implant into the vagina (choice B) is contraindicated and can cause harm. Applying double gloves to retrieve the implant for disposal (choice C) is not adequate for ensuring proper containment and handling of the radioactive implant, which requires specialized equipment like a lead container and long-handled forceps.
5. The nurse is measuring the output of an infant admitted for vomiting and diarrhea. During a 12-hour shift, the infant drinks 4 ounces of Pedialyte, vomits 25 ml, and voids twice. The dry diaper weighs 105 grams. Which computer documentation should the nurse enter in the infant’s record?
- A. Subtract vomitus from 120 ml Pedialyte, then document 95 ml oral intake.
- B. Compare the difference between the infant’s current weight and admission weight.
- C. Document on the flow sheet that the infant voided twice and vomited 25 ml.
- D. Calculate the difference in wet and dry diapers and document 80 ml urine.
Correct answer: C
Rationale: The correct answer is to document on the flow sheet that the infant voided twice and vomited 25 ml. This choice accurately reflects the need for accurate documentation of intake and output, essential for monitoring the infant's hydration status. Choice A is incorrect because the oral intake should not be calculated by subtracting vomitus from the oral intake. Choice B is incorrect because it does not address the specific documentation related to the infant's output. Choice D is incorrect as it focuses on calculating urine output based on diaper weight, which is not the primary concern in this scenario.
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