HESI LPN
CAT Exam Practice
1. A client is admitted to the intensive care unit with diabetes insipidus due to a pituitary gland tumor. Which potential complication should the nurse monitor closely?
- A. Hypokalemia
- B. Ketonuria
- C. Peripheral edema
- D. Elevated blood pressure
Correct answer: A
Rationale: The correct answer is A: Hypokalemia. In diabetes insipidus, there is excessive urination leading to fluid loss, which can result in electrolyte imbalances such as hypokalemia. Monitoring potassium levels is crucial to prevent complications like cardiac arrhythmias. Choices B, C, and D are incorrect. Ketonuria is typically seen in diabetic ketoacidosis, peripheral edema is more commonly associated with conditions like heart failure or kidney disease, and elevated blood pressure is not a direct complication of diabetes insipidus related to a pituitary gland tumor.
2. The nurse is planning to assess a client's oxygen saturation to determine if additional oxygen is needed via nasal cannula. The client has bilateral below-the-knee amputations and weak, thread pedal pulses. What action should the nurse take?
- A. Document that an accurate oxygen saturation reading cannot be obtained
- B. Elevate the client's hands for five minutes prior to obtaining a reading from the finger
- C. Increase the oxygen based on the client's breathing patterns and lung sounds
- D. Place the oximeter clip on the earlobe to obtain the oxygen saturation reading
Correct answer: D
Rationale: Placing the oximeter clip on the earlobe is appropriate for clients with poor peripheral circulation, such as those with weak and thread pedal pulses due to bilateral below-the-knee amputations. This placement can provide a more accurate reading of oxygen saturation in such clients. Choice A is incorrect because alternative methods, such as earlobe placement, can be used to obtain accurate readings. Choice B is unnecessary and not related to obtaining an accurate oxygen saturation reading. Choice C is incorrect because increasing oxygen without assessing the oxygen saturation level first can be detrimental and is not based on evidence-based practice.
3. What explanation is best for the nurse to provide a client who asks the purpose of using the log-rolling technique for turning?
- A. Working together can decrease the risk of back injury.
- B. The technique is intended to maintain straight spinal alignment.
- C. Using two or three people increases client safety.
- D. Turning instead of pulling reduces the likelihood of skin damage.
Correct answer: B
Rationale: The correct answer is B: 'The technique is intended to maintain straight spinal alignment.' Log-rolling is a technique used to move a person as a single unit to maintain the alignment of the spinal column. This is crucial to prevent spinal cord injury, especially in clients with suspected spine fractures. Choice A is incorrect because log-rolling focuses on spinal alignment, not just decreasing back injury risks. Choice C is incorrect because the number of people involved is not the primary purpose of log-rolling, which is maintaining spinal alignment. Choice D is incorrect because while turning instead of pulling may help prevent skin damage, the primary goal of log-rolling is to protect the spine, not the skin.
4. A 46-year-old male client who had a myocardial infarction 24 hours ago comes to the nurse’s station fully dressed and wanting to go home. He tells the nurse that he is feeling much better at this time. Based on this behavior, which nursing problem should the nurse formulate?
- A. Anxiety related to treatment plan
- B. Deficient knowledge of lifestyle changes
- C. Ineffective coping related to denial
- D. Decisional conflict due to stress
Correct answer: C
Rationale: The correct answer is C: 'Ineffective coping related to denial.' The client's behavior of wanting to go home and feeling much better shortly after a myocardial infarction indicates denial of the severity of his condition. This denial can lead to ineffective coping mechanisms, hindering his recovery and treatment. Choices A, B, and D are incorrect because the client's behavior is not primarily driven by anxiety about the treatment plan, deficient knowledge of lifestyle changes, or decisional conflict due to stress, but rather by denial and ineffective coping mechanisms.
5. 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.
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