HESI RN
HESI Medical Surgical Practice Exam
1. The client with chronic renal failure is receiving hemodialysis. Which of the following laboratory values should the nurse monitor closely?
- A. Hemoglobin level.
- B. Blood urea nitrogen (BUN) level.
- C. Serum potassium level.
- D. Creatinine level.
Correct answer: C
Rationale: The serum potassium level should be monitored closely in clients undergoing hemodialysis due to the risk of hyperkalemia. Hemodialysis is used to remove waste products and excess electrolytes like potassium from the blood. Monitoring potassium levels is crucial because an imbalance can lead to serious cardiac complications, making it the priority value to monitor in this scenario. Monitoring hemoglobin levels (choice A) is important for anemia assessment in chronic renal failure but is not directly related to hemodialysis. Blood urea nitrogen (BUN) levels (choice B) and creatinine levels (choice D) are commonly monitored in renal function tests but are not the top priority for monitoring in a client undergoing hemodialysis.
2. A client with acute kidney injury has a blood pressure of 76/55 mm Hg. The health care provider ordered 1000 mL of normal saline to be infused over 1 hour to maintain perfusion. The client is starting to develop shortness of breath. What is the nurse’s priority action?
- A. Calculate the mean arterial pressure (MAP).
- B. Ask for insertion of a pulmonary artery catheter.
- C. Take the client’s pulse.
- D. Slow down the normal saline infusion.
Correct answer: D
Rationale: The nurse should recognize that the client may be developing fluid overload and respiratory distress due to the rapid normal saline infusion. The priority action is to slow down the infusion to prevent worsening respiratory distress and potential fluid overload. While calculating the mean arterial pressure (MAP) is important to assess perfusion, addressing the immediate respiratory distress takes precedence. Inserting a pulmonary artery catheter would provide detailed hemodynamic information but is not the initial step in managing acute respiratory distress. Monitoring vital signs, including the client's pulse, is crucial after adjusting the intravenous infusion to ensure a safe response to the intervention.
3. A healthcare professional reviews a client’s laboratory results. Which results from the client’s urinalysis should the healthcare professional identify as normal? (Select all that apply.)
- A. pH: 6
- B. Specific gravity: 1.015
- C. Glucose: negative
- D. All of the above
Correct answer: D
Rationale: In a urinalysis, a pH of 6 is within the normal range (typically between 4.6 and 8); a specific gravity of 1.015 is considered normal (usually ranging between 1.005 to 1.030); and a negative glucose result is also normal. Therefore, choices A, B, and C are correct as they fall within the normal values for a urinalysis. Choices A, B, and C are the correct answers, as the pH, specific gravity, and glucose levels are within the normal range for a urinalysis. Choice D is correct because all the listed values are normal. Choices A, B, and C are the correct options as they meet the criteria for normal urinalysis values. The other choices do not fall within the normal range for a urinalysis.
4. A marathon runner comes into the clinic and states, 'I have not urinated very much in the last few days.' The nurse notes a heart rate of 110 beats/min and a blood pressure of 86/58 mm Hg. Which action by the nurse is the priority?
- A. Give the client a bottle of water immediately.
- B. Start an intravenous line for fluids.
- C. Teach the client to drink 2 to 3 liters of water daily.
- D. Perform an electrocardiogram.
Correct answer: A
Rationale: The priority action for the nurse is to give the client a bottle of water immediately. The athlete's symptoms of decreased urination, along with a heart rate of 110 beats/min and low blood pressure of 86/58 mm Hg, indicate mild dehydration. Rehydration should begin promptly to address the dehydration. Teaching the client to drink 2 to 3 liters of water daily is a good long-term strategy but not the immediate priority. Starting an intravenous line for fluids may be necessary if oral hydration is insufficient or if the degree of dehydration is severe. Performing an electrocardiogram is not indicated at this time as the priority is addressing the dehydration.
5. The nurse is administering intravenous fluids to a dehydrated patient. On the second day of care, the patient's weight has increased by 2.25 pounds. The nurse would expect that the patient's fluid intake has
- A. equaled urine output.
- B. exceeded urine output by 1 L.
- C. exceeded urine output by 2.5 L.
- D. exceeded urine output by 3 L.
Correct answer: B
Rationale: A weight gain of 1 kg, or approximately 2.2 to 2.5 lb, is generally equivalent to 1 liter (L) of fluid retained by the body. In this case, the patient's weight gain of 2.25 pounds suggests an excess fluid retention of approximately 1 liter, indicating that the patient's fluid intake has exceeded urine output by 1 liter. Choices C and D are incorrect as they overestimate the fluid excess based on the patient's weight gain. Choice A is incorrect as it implies an exact balance between fluid intake and urine output, which is not reflected in the given weight increase.
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