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. During discharge teaching, the nurse discusses the parameters for weight monitoring with a client recently diagnosed with heart failure (HF). Which information is most important for the client to acknowledge?
- A. Weigh at the same time every day
- B. Report weight gain of 2 pounds (0.9kg) in 24 hours
- C. Maintain a daily weight record
- D. Limit dietary salt intake
Correct answer: B
Rationale: The correct answer is B. Reporting a weight gain of 2 pounds in 24 hours is crucial for detecting fluid retention or worsening heart failure. This rapid weight gain indicates possible fluid overload, which can be a sign of worsening HF. Option A is not as critical as the timing of weighing can vary. Option C is important for tracking trends but does not emphasize the significance of a sudden weight gain. Option D is relevant for managing HF but does not address the immediate need for reporting rapid weight gain.
3. In preparing a care plan for a client admitted with a diagnosis of Guillain-Barre syndrome, which nursing problem has the highest priority?
- A. Ineffective coping related to uncertainty of disease progression
- B. Imbalanced nutrition: less than body requirements related to impaired swallowing reflex
- C. Ineffective breathing pattern related to ascending paralysis
- D. Impaired physical mobility related to asymmetrical descending paralysis
Correct answer: C
Rationale: Ineffective breathing pattern is the highest priority nursing problem for a client with Guillain-Barre syndrome due to the potential risk of respiratory failure. As the paralysis ascends, it can affect the muscles needed for breathing, leading to respiratory compromise. Addressing this problem promptly is crucial to prevent respiratory distress and failure. Choices A, B, and D are also important nursing problems in Guillain-Barre syndrome, but ensuring effective breathing takes precedence over coping, nutrition, and mobility due to the immediate threat it poses to the client's life.
4. When preparing the client for a thoracentesis, which action is essential for the nurse to take?
- A. Encourage the client to cough during the procedure
- B. Ask the client to void prior to the procedure
- C. Have the client lie in the prone position
- D. Determine if chest x-rays have been completed
Correct answer: B
Rationale: The essential action for the nurse to take when preparing a client for a thoracentesis is to ask the client to void prior to the procedure. This step is crucial as it helps prevent discomfort and reduces the risk of accidental injury. Encouraging the client to cough during the procedure (Choice A) is inappropriate as it can affect the accuracy of the thoracentesis. Having the client lie in the prone position (Choice C) is incorrect; the procedure is typically performed with the client sitting upright or slightly leaning forward. While determining if chest x-rays have been completed (Choice D) is important, ensuring the client has emptied their bladder is more critical for their comfort and safety during the procedure.
5. The nurse identifies the presence of clear fluid on the surgical dressing of a client who just returned to the unit following lumbar spinal surgery. What action should the nurse implement immediately?
- A. Change the dressing using a compression bandage
- B. Test fluid on the dressing for glucose
- C. Document the findings in the electronic medical record
- D. Mark drainage area with a pen and continue to monitor
Correct answer: B
Rationale: The correct action for the nurse to implement immediately upon identifying clear fluid on the surgical dressing post-lumbar surgery is to test the fluid for glucose. Clear fluid could indicate cerebrospinal fluid (CSF) leakage, and testing for glucose can help confirm this. Changing the dressing using a compression bandage (Choice A) without further assessment could lead to complications. Documenting the findings (Choice C) is important but not as immediate as confirming the presence of CSF. Marking the drainage area with a pen and monitoring (Choice D) does not address the need for immediate confirmation of CSF leakage.
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