HESI RN
RN HESI Exit Exam
1. A woman who takes pyridostigmine for myasthenia gravis (MG) arrives at the emergency department complaining of extreme muscle weakness. Her adult daughter tells the nurse that since yesterday her mother has been unable to smile. Which assessment finding warrants immediate intervention by the nurse?
- A. Uncontrollable drooling.
- B. Inability to raise voice.
- C. Tingling of extremities.
- D. Eyelid drooping.
Correct answer: A
Rationale: Uncontrollable drooling can be a sign of a myasthenic crisis, which requires immediate medical intervention to prevent respiratory failure. Drooling indicates difficulty in swallowing, which can lead to aspiration and respiratory compromise. Inability to raise voice (choice B) and tingling of extremities (choice C) are not typically associated with myasthenic crisis. Although eyelid drooping (choice D) is a common symptom of myasthenia gravis, it is not as urgent as uncontrollable drooling in indicating a potential crisis.
2. Which nursing intervention is most important when caring for a client with myasthenia gravis?
- A. Encourage the client to rest frequently.
- B. Administer medication 30 minutes before meals.
- C. Maintain a patent airway.
- D. Monitor for signs of respiratory infection.
Correct answer: C
Rationale: Maintaining a patent airway is crucial for clients with myasthenia gravis because muscle weakness can affect the muscles responsible for breathing, potentially leading to respiratory compromise. Encouraging rest, administering medication, and monitoring for respiratory infections are important aspects of care but do not take precedence over ensuring a patent airway for adequate oxygenation.
3. The nurse is caring for a client with a chest tube in place following a pneumothorax. Which finding requires immediate intervention?
- A. Oxygen saturation of 95%
- B. Crepitus around the insertion site
- C. Subcutaneous emphysema
- D. Drainage of 50 ml per hour
Correct answer: C
Rationale: Subcutaneous emphysema requires immediate intervention in a client with a chest tube following a pneumothorax as it can indicate a pneumothorax recurrence or air leak. Oxygen saturation of 95% is within the normal range and does not require immediate intervention. Crepitus around the insertion site can be expected post-procedure and may not necessitate immediate action. Drainage of 50 ml per hour is a normal finding and does not raise immediate concerns.
4. The nurse discovers that an elderly client with no history of cardiac or renal disease has an elevated serum magnesium level. To further investigate the cause of this electrolyte imbalance, what information is most important for the nurse to obtain from the client's medical history?
- A. Frequency of laxative use for chronic constipation
- B. Dietary intake of magnesium-rich foods
- C. Use of magnesium-containing supplements
- D. History of alcohol use
Correct answer: A
Rationale: The correct answer is A. Frequent use of magnesium-containing laxatives can lead to hypermagnesemia, particularly in elderly clients. Option B, dietary intake of magnesium-rich foods, may contribute to elevated serum magnesium levels but is less likely the cause in this scenario. Option C, the use of magnesium-containing supplements, can also contribute to hypermagnesemia but is not as common in elderly clients without a history of using such supplements. Option D, history of alcohol use, is less relevant to the development of elevated serum magnesium levels compared to laxative use for chronic constipation.
5. A client with a history of chronic alcoholism is admitted with confusion, ataxia, and diplopia. Which nursing intervention is a priority for this client?
- A. Monitor for signs of alcohol withdrawal.
- B. Administer thiamine as prescribed.
- C. Provide a quiet environment to reduce confusion.
- D. Initiate fall precautions.
Correct answer: B
Rationale: The correct answer is to administer thiamine as prescribed. This intervention is a priority for clients with chronic alcoholism to prevent Wernicke's encephalopathy, a serious complication of thiamine deficiency. Monitoring for signs of alcohol withdrawal (choice A) is important but not the priority in this scenario. Providing a quiet environment (choice C) may be beneficial but does not address the immediate need to prevent Wernicke's encephalopathy. Initiating fall precautions (choice D) is also important but not the priority compared to administering thiamine to prevent a life-threatening condition.
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