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HESI CAT Exam Test Bank
1. A client with myasthenia gravis (MG) is receiving immunosuppressive therapy. Review of recent laboratory test results shows that the client’s serum magnesium level has decreased below the normal range. In addition to contacting the healthcare provider, what nursing action is most important?
- A. Check the visual difficulties
- B. Note the most recent hemoglobin level
- C. Assess for hand and joint pain
- D. Observe rhythm on telemetry monitor
Correct answer: D
Rationale: The correct answer is to observe the rhythm on the telemetry monitor. Decreased magnesium levels can lead to cardiac issues, such as arrhythmias. Monitoring the heart rhythm is crucial in this situation. Checking visual difficulties (choice A) is not directly related to the potential cardiac effects of low magnesium levels. Noting the hemoglobin level (choice B) and assessing for hand and joint pain (choice C) are not the priority when dealing with low magnesium levels and possible cardiac complications.
2. For a client with pneumonia, the prescription states, “Oxygen at liters/min per nasal cannula PRN difficult breathing.” Which nursing intervention is effective in preventing oxygen toxicity?
- A. Avoiding the administration of oxygen at high levels for extended periods.
- B. Administering a sedative at bedtime to slow the client’s respiratory rate.
- C. Removing the nasal cannula during the night to prevent oxygen buildup.
- D. Running oxygen through a hydration source prior to administration.
Correct answer: A
Rationale: Choice A is the correct answer because prolonged exposure to high levels of oxygen can lead to oxygen toxicity. Administering oxygen at high levels for extended periods can overwhelm the body's natural defenses against high oxygen levels, causing toxicity. Choices B, C, and D are incorrect. Choice B is unrelated to preventing oxygen toxicity. Choice C is unsafe as removing the nasal cannula can deprive the client of necessary oxygen. Choice D, running oxygen through a hydration source, is not a standard practice for preventing oxygen toxicity.
3. An adult client presents to the clinic with large draining ulcers on both lower legs that are characteristic of Kaposi’s Sarcoma lesions. The client is accompanied by two family members. What action should the nurse take?
- A. Obtain a blood sample to determine if the client is HIV positive
- B. Send the family to the waiting area while conducting a head-to-toe assessment
- C. Complete a head-to-toe assessment to identify other signs of HIV
- D. Ask the family members to wear gloves when touching the client
Correct answer: C
Rationale: In this scenario, the most appropriate action for the nurse to take is to complete a head-to-toe assessment to identify other signs of HIV. Kaposi’s Sarcoma is commonly associated with HIV infection, and conducting a comprehensive assessment can provide crucial information on potential signs and symptoms related to HIV. This information is essential for providing appropriate care and treatment. Option A is not the priority at this moment, as the focus should be on assessing the client comprehensively first. Sending the family members away (Option B) may not be necessary if they are not interfering with the assessment process. While infection control is important, asking the family members to wear gloves (Option D) is not the most critical action to take in this situation.
4. Identify the placement of the stapes footplate into the bony labyrinth.
- A. Fenestra vestibuli
- B. Fenestra cochleae
- C. Tympanic membrane
- D. Round window
Correct answer: A
Rationale: The correct answer is A: Fenestra vestibuli. The stapes footplate is placed into the fenestra vestibuli of the bony labyrinth. This structure is also known as the oval window and is located at the junction of the middle ear and inner ear. Choice B, Fenestra cochleae, is incorrect as this opening is also known as the round window and is located near the base of the cochlea. Choice C, Tympanic membrane, is incorrect as it is also known as the eardrum and separates the external ear from the middle ear. Choice D, Round window, is incorrect as it is the opening covered by the secondary tympanic membrane and is important for the dissipation of sound waves in the cochlea.
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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