HESI RN
HESI 799 RN Exit Exam
1. A male client is admitted with a bowel obstruction and intractable vomiting for the last several hours despite the use of antiemetics. Which intervention should the nurse implement first?
- A. Infuse 0.9% sodium chloride 500 ml bolus
- B. Administer an antiemetic intravenously
- C. Insert a nasogastric tube
- D. Prepare the client for surgery
Correct answer: A
Rationale: The correct first intervention for a male client with a bowel obstruction and intractable vomiting is to infuse 0.9% sodium chloride 500 ml bolus. This intervention is crucial to address the risk of hypovolemia due to excessive vomiting. Administering intravenous fluids will help prevent dehydration, maintain blood pressure, and stabilize the client's condition. Choice B, administering an antiemetic intravenously, may not be effective as the client has already been unresponsive to antiemetics orally. Choice C, inserting a nasogastric tube, may be necessary but is not the priority in this situation. Choice D, preparing the client for surgery, should only be considered after stabilizing the client's fluid and electrolyte balance.
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. The practical nurse (PN) is assigned to work with three registered nurses (RNs) who are caring for neurologically compromised clients. The client with which change in status is best to assign to the PN?
- A. Diabetic ketoacidosis with a Glasgow Coma Scale score change from 10 to 7.
- B. Myxedema coma with a blood pressure change from 80/50 to 70/40.
- C. Viral meningitis with a temperature change from 101°F to 102°F.
- D. Subdural hematoma with a blood pressure change from 150/80 to 170/60.
Correct answer: C
Rationale: The client with viral meningitis and a temperature change is the most stable and appropriate for assignment to the PN. A change in temperature from 101°F to 102°F is not as critical as changes in Glasgow Coma Scale score, blood pressure, or wider blood pressure variations. The other clients require more complex monitoring and intervention due to their critical changes in status.
4. The nurse is caring for a client who is postoperative following a thyroidectomy. Which laboratory value should be monitored closely?
- A. Serum calcium of 8.5 mg/dL
- B. Serum sodium of 136 mEq/L
- C. Serum potassium of 3.0 mEq/L
- D. Serum chloride of 102 mEq/L
Correct answer: C
Rationale: A serum potassium level of 3.0 mEq/L should be monitored closely in a client who is postoperative following a thyroidectomy to detect any electrolyte imbalances. After a thyroidectomy, there is a risk of hypokalemia due to the effects of anesthesia, stress response, and the surgical procedure itself. Monitoring serum potassium levels is crucial as hypokalemia can lead to cardiac arrhythmias and muscle weakness. Serum calcium, sodium, and chloride levels are important but not the primary focus following a thyroidectomy, making them incorrect choices.
5. The nurse is caring for a client with a history of atrial fibrillation who is receiving warfarin (Coumadin). Which laboratory value should be closely monitored?
- A. Serum potassium level
- B. Prothrombin time (PT)
- C. International Normalized Ratio (INR)
- D. Serum sodium level
Correct answer: C
Rationale: The correct answer is C, International Normalized Ratio (INR). The INR should be closely monitored in a client receiving warfarin (Coumadin) to assess the effectiveness and safety of anticoagulation therapy. Monitoring the INR helps ensure that the client is within the therapeutic range for anticoagulation to prevent complications such as bleeding or clotting. Choices A, B, and D are incorrect. While monitoring electrolyte levels like serum potassium and sodium is important in overall client care, they are not specific to monitoring the effects of warfarin therapy. Prothrombin time (PT) is a component of INR and helps in monitoring warfarin therapy, but INR gives a standardized result that is independent of the laboratory method used, making it the preferred choice for monitoring warfarin therapy.
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