HESI RN
HESI RN Exit Exam
1. The nurse is assessing a client with chronic kidney disease (CKD) who is receiving erythropoietin therapy. Which laboratory value should be closely monitored?
- A. Serum potassium level
- B. Hemoglobin level
- C. White blood cell count
- D. Serum sodium level of 135 mEq/L
Correct answer: A
Rationale: The correct answer is A: Serum potassium level. In clients receiving erythropoietin therapy for chronic kidney disease, monitoring serum potassium levels is crucial due to the risk of developing hyperkalemia. Erythropoietin therapy can stimulate red blood cell production, leading to an increase in potassium levels. Monitoring potassium levels helps prevent complications associated with hyperkalemia, such as cardiac arrhythmias. Choices B, C, and D are incorrect because while hemoglobin levels are relevant for assessing the effectiveness of erythropoietin therapy, monitoring potassium levels is more critical due to the potential adverse effects of elevated potassium levels in CKD patients on this therapy.
2. The nurse is assessing a client with chronic obstructive pulmonary disease (COPD) who is receiving supplemental oxygen. Which finding requires immediate intervention?
- A. Oxygen saturation of 90%
- B. Respiratory rate of 24 breaths per minute
- C. Use of accessory muscles
- D. Blood pressure of 110/70 mmHg
Correct answer: C
Rationale: The correct answer is C. The use of accessory muscles indicates increased work of breathing and may signal respiratory failure in a client with COPD, requiring immediate intervention. Oxygen saturation of 90% is within an acceptable range for COPD patients on supplemental oxygen. A respiratory rate of 24 breaths per minute is slightly elevated but not an immediate concern. A blood pressure of 110/70 mmHg is within the normal range and does not require immediate intervention in this scenario.
3. A client without a history of respiratory disease has a pulse oximeter in place after surgery. The nurse monitors the pulse oximeter readings to ensure that oxygen saturation remains above:
- A. 85%
- B. 89%
- C. 95%
- D. 100%
Correct answer: C
Rationale: Pulse oximetry is a noninvasive method of continuously monitoring the oxygen saturation of hemoglobin (SaO2). In the absence of underlying respiratory disease, the expected oxygen saturation level is at least 95%. Oxygen saturation levels below 95% may indicate hypoxemia, which can compromise tissue perfusion and oxygen delivery to vital organs. Therefore, maintaining oxygen saturation above 95% is crucial to ensure adequate oxygenation post-surgery. Choices A, B, and D are incorrect as they represent oxygen saturation levels that are below the expected value for a client without a history of respiratory disease, which should be at least 95%.
4. The client has hyperparathyroidism. Which of the following dietary instructions should the nurse provide?
- A. Increase calcium intake
- B. Limit phosphorus intake
- C. Increase fluid intake
- D. Limit vitamin D intake
Correct answer: C
Rationale: The correct answer is to 'Increase fluid intake.' This is because increasing fluid intake helps prevent kidney stones, a common complication of hyperparathyroidism. While calcium is involved in the condition, increasing calcium intake is not recommended as it can exacerbate hypercalcemia, which is commonly present in hyperparathyroidism. Limiting phosphorus intake is not directly related to managing hyperparathyroidism. Limiting vitamin D intake is also not typically necessary in managing hyperparathyroidism, as it is usually a calcium and PTH-related issue.
5. The client with chronic obstructive pulmonary disease (COPD) is being taught pursed-lip breathing by the nurse. What is the purpose of this technique?
- A. To promote oxygenation by removing secretions.
- B. To reduce the amount of air trapped in the lungs.
- C. To increase the amount of carbon dioxide exhaled.
- D. To slow the respiratory rate and improve air exchange.
Correct answer: C
Rationale: Pursed-lip breathing is used to increase the amount of carbon dioxide exhaled (C) in clients with chronic obstructive pulmonary disease (COPD). By doing so, it helps prevent air trapping and enhances gas exchange, ultimately improving respiratory efficiency. While removing secretions (A) and reducing air trapping (B) can be associated benefits to some extent, the primary goal of pursed-lip breathing is to optimize carbon dioxide elimination and enhance breathing mechanics. Slowing the respiratory rate (D) is not the primary purpose of pursed-lip breathing.