HESI RN
HESI 799 RN Exit Exam
1. The nurse is caring for a client with a tracheostomy who has thick, tenacious secretions. Which intervention should the nurse implement first?
- A. Encourage fluid intake to thin secretions.
- B. Administer a mucolytic agent.
- C. Increase humidity in the client's room.
- D. Perform deep suctioning as needed.
Correct answer: C
Rationale: Increasing humidity in the client's room is the first priority in managing thick, tenacious secretions in a client with a tracheostomy to facilitate airway clearance. This intervention helps to moisten secretions, making them easier to clear. Encouraging fluid intake (Choice A) can be beneficial, but increasing humidity should be addressed first. Administering a mucolytic agent (Choice B) and performing deep suctioning (Choice D) are interventions that can be considered after addressing humidity if necessary, but they are not the initial priority.
2. A client with type 1 diabetes is admitted with diabetic ketoacidosis (DKA). Which laboratory value is most concerning?
- A. Serum glucose of 300 mg/dl
- B. Serum bicarbonate of 18 mEq/L
- C. Serum potassium of 5.5 mEq/L
- D. Serum sodium of 135 mEq/L
Correct answer: C
Rationale: A serum potassium level of 5.5 mEq/L is concerning in a client with DKA as it may indicate worsening hyperkalemia, requiring immediate intervention. Elevated serum potassium levels can lead to life-threatening cardiac arrhythmias. While elevated glucose and low bicarbonate are characteristic of DKA, hyperkalemia poses a higher immediate risk. Serum sodium within the normal range is not typically a primary concern in DKA.
3. A client with type 1 diabetes is admitted with diabetic ketoacidosis (DKA). Which laboratory value requires immediate intervention?
- A. Serum glucose of 300 mg/dl
- B. Serum potassium of 5.5 mEq/L
- C. Serum bicarbonate of 18 mEq/L
- D. Serum sodium of 135 mEq/L
Correct answer: C
Rationale: A serum bicarbonate level of 18 mEq/L requires immediate intervention in a client with diabetic ketoacidosis (DKA). A low serum bicarbonate level indicates metabolic acidosis, which can be life-threatening. This condition needs urgent correction to restore acid-base balance. Serum glucose of 300 mg/dl, serum potassium of 5.5 mEq/L, and serum sodium of 135 mEq/L are abnormal values, but they do not pose an immediate threat to the client's life compared to the metabolic acidosis indicated by the low serum bicarbonate level.
4. During shift report, the central electrocardiogram (EKG) monitoring system alarms. Which client alarm should the nurse investigate first?
- A. Respiratory apnea of 30 seconds
- B. Oxygen saturation rate of 88%
- C. Eight premature ventricular beats every minute
- D. Disconnected monitor signal for the last 6 minutes.
Correct answer: A
Rationale: The correct answer is A: Respiratory apnea of 30 seconds. Respiratory apnea indicates a cessation of breathing, which is a life-threatening emergency requiring immediate intervention. Priority should be given to assessing and managing airway, breathing, and circulation. Option B, oxygen saturation rate of 88%, can indicate hypoxemia, but addressing the lack of breathing takes precedence. Option C, eight premature ventricular beats every minute, and option D, a disconnected monitor signal, are important but do not pose an immediate threat to the client's life compared to respiratory apnea.
5. A client with a history of chronic heart failure is admitted with shortness of breath and crackles in the lungs. Which laboratory value should be closely monitored?
- A. Serum creatinine of 2.0 mg/dL
- B. Serum sodium of 135 mEq/L
- C. Serum potassium of 5.5 mEq/L
- D. Blood glucose of 150 mg/dL
Correct answer: C
Rationale: A serum potassium level of 5.5 mEq/L should be closely monitored in a client with chronic heart failure as it may indicate hyperkalemia, requiring intervention. Hyperkalemia can lead to life-threatening cardiac arrhythmias in patients with heart failure. Serum creatinine (Choice A) is important to monitor for kidney function but is not the priority in this case. Serum sodium (Choice B) and blood glucose (Choice D) levels are not typically the primary focus when assessing a client with heart failure presenting with respiratory symptoms and crackles in the lungs.
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