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. In a patient with type 1 diabetes, which of the following is a sign of diabetic ketoacidosis (DKA)?
- A. Polyuria
- B. Bradycardia
- C. Dry skin
- D. Tachycardia
Correct answer: D
Rationale: Tachycardia is a sign of diabetic ketoacidosis (DKA) in a patient with type 1 diabetes. In DKA, the body responds to hyperglycemia and dehydration by increasing heart rate. Polyuria (increased urination) is a symptom of diabetes but not specific to DKA. Bradycardia (slow heart rate) and dry skin are not typical signs of DKA; instead, tachycardia and other signs of volume depletion are more common.
3. When assessing an individual with peripheral vascular disease, which clinical manifestation would indicate complete arterial obstruction in the lower left leg?
- A. Aching pain in the left calf.
- B. Burning pain in the left calf.
- C. Numbness and tingling in the left leg.
- D. Coldness of the left foot and ankle.
Correct answer: D
Rationale: Coldness of the left foot and ankle is the correct clinical manifestation indicating complete arterial obstruction in the lower left leg. Complete arterial obstruction results in reduced blood flow, leading to decreased temperature in the affected area. Aching pain (Choice A) and burning pain (Choice B) are more commonly associated with partial obstructions or ischemia, while numbness and tingling (Choice C) can be indicative of nerve involvement or compromised circulation, but not specifically complete arterial obstruction. The coldness in the foot and ankle is a result of severely reduced blood flow, which impairs the delivery of oxygen and nutrients to the tissues in that area, leading to a lower temperature. This symptom is a critical indicator of a more severe blockage compared to the other options provided.
4. A client is being discharged after lithotripsy for a urinary calculus. Which statements should the nurse include in the discharge teaching? (Select all that apply.)
- A. Finish the prescribed antibiotic even if you are feeling better.
- B. Drink at least 3 liters of fluid each day.
- C. The bruising on your back may take several weeks to resolve.
- D. All of the above
Correct answer: D
Rationale: After lithotripsy for a urinary calculus, it is important for the client to complete the prescribed antibiotic course to prevent urinary tract infections. Drinking at least 3 liters of fluid daily helps dilute stone-forming crystals, prevent dehydration, and promote urine flow. Bruising on the back may occur after the procedure and can take several weeks to resolve. Additionally, the client may experience blood in the urine for several days post-procedure. Reporting any pain, fever, chills, or urination difficulties to the healthcare provider is essential, as these symptoms could indicate infection or stone formation. Choice D is correct as all the statements are appropriate for the client's discharge teaching. Choices A, B, and C are individually correct based on the rationale provided, making D the correct answer.
5. A nurse contacts the healthcare provider after reviewing a client’s laboratory results and noting a blood urea nitrogen (BUN) of 35 mg/dL and a creatinine of 1.0 mg/dL. For which action should the nurse recommend a prescription?
- A. Intravenous fluids
- B. Hemodialysis
- C. Fluid restriction
- D. Urine culture and sensitivity
Correct answer: A
Rationale: The normal range for BUN is 10 to 20 mg/dL, and for creatinine, it is 0.6 to 1.2 mg/dL in males and 0.5 to 1.1 mg/dL in females. Creatinine is a more specific marker for kidney function compared to BUN. In this case, the client's creatinine level is within the normal range, indicating a non-renal cause for the elevated BUN. Dehydration is a common cause of increased BUN, so the appropriate action would be to recommend intravenous fluids to address the dehydration. Fluid restriction is not indicated as the client needs hydration. Hemodialysis is not appropriate for dehydration and is typically reserved for renal failure. The laboratory results do not suggest an infection, making a urine culture and sensitivity unnecessary in this scenario.
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