HESI LPN
CAT Exam Practice
1. A client with acute renal failure (ARF) is admitted for uncontrolled type 1 diabetes mellitus and hyperkalemia. The nurse administers an IV dose of regular insulin per sliding scale. Which intervention is the most important for the nurse to include in this client’s plan of care?
- A. Monitor the client’s cardiac activity via telemetry.
- B. Maintain venous access with an infusion of normal saline.
- C. Assess glucose levels via finger stick every 4 to 6 hours.
- D. Evaluate hourly urine output for the return of normal renal function.
Correct answer: A
Rationale: Monitoring cardiac activity is crucial in this scenario because hyperkalemia can lead to serious cardiac dysrhythmias, which can be life-threatening. Regular monitoring of the client’s cardiac activity via telemetry allows for early detection of any potential cardiac complications. Maintaining venous access with a normal saline infusion is important for hydration but does not address the immediate risk of cardiac dysrhythmias posed by hyperkalemia. Assessing glucose levels is essential in diabetes management but is not the priority when dealing with hyperkalemia-induced cardiac risks. Evaluating hourly urine output for the return of normal renal function is important in ARF but is not as urgent as monitoring the client's cardiac activity in the context of hyperkalemia.
2. A 12-year-old client who had an appendectomy two days ago is receiving 0.9% normal saline at 50 ml/hour. The client’s urine specific gravity is 1.035. What action should the nurse implement?
- A. Encourage popsicles and fluids of choice
- B. Evaluate postural blood pressure measurements
- C. Obtain a specimen for urinalysis
- D. Assess bowel sounds in all quadrants
Correct answer: A
Rationale: Encouraging fluids helps address dehydration and potentially high urine specific gravity, which is often related to inadequate fluid intake. In this scenario, the client may be at risk of dehydration due to the appendectomy and the high urine specific gravity. Encouraging popsicles and fluids of choice can help increase fluid intake and improve hydration status. The other options are not the priority at this time. Postural blood pressure measurements may be relevant for assessing fluid status but are not the immediate action needed. Obtaining a specimen for urinalysis and assessing bowel sounds are not the priority actions based on the client's condition.
3. The nurse is demonstrating wound care to a client following abdominal surgery. In what order should the nurse teach the technique?
- A. Remove old dressing using clean gloves. Discard gloves with old dressing
- B. Moisten sterile gauze with normal saline. Clean wound from least contaminated area to most contaminated area
- C. Apply sterile gauze dressing to wound area
- D. Secure dressing with tape
Correct answer: A
Rationale: The correct order ensures proper aseptic technique and wound care to prevent infection. The first step is to remove the old dressing using clean gloves to prevent contamination. Discarding the gloves with the old dressing helps maintain cleanliness. Choices B, C, and D are incorrect because cleaning the wound, applying a new dressing, and securing it should come after removing the old dressing to maintain asepsis and prevent infection.
4. The unlicensed assistive personnel (UAP) reports that a client’s blood pressure cannot be measured because the client has casts on both arms and is unable to be turned to the prone position for blood pressure measurement in the legs. What action should the nurse implement?
- A. Advise the UAP to document the last blood pressure obtained on the client's graphic sheet
- B. Estimate the blood pressure by assessing the pulse volume of the client’s radial pulses
- C. Demonstrate how to palpate the popliteal pulse with the client supine and the knee flexed
- D. Document why the blood pressure cannot be accurately measured at the present time
Correct answer: D
Rationale: When a client cannot have their blood pressure measured due to specific circumstances such as casts on both arms, the nurse should document the reason why the blood pressure cannot be obtained accurately. This documentation is crucial for maintaining a clear record of the client's condition and for continuity of care. Advising the UAP to document the last blood pressure obtained (Choice A) does not address the current inability to measure the blood pressure. Estimating the blood pressure by assessing the pulse volume of radial pulses (Choice B) is not a reliable method for obtaining accurate blood pressure readings. Demonstrating how to palpate the popliteal pulse (Choice C) is irrelevant in this situation as it does not provide a solution for accurately measuring the blood pressure.
5. Which type of wound would most likely require immediate intervention by the healthcare provider?
- A. Laceration
- B. Abrasion
- C. Contusion
- D. Ulceration
Correct answer: A
Rationale: A laceration would most likely require immediate intervention by the healthcare provider due to its deeper tissue damage, significant bleeding, and higher risk of infection compared to abrasions, contusions, and ulcerations. Lacerations often need prompt attention to control bleeding, clean the wound, and reduce the risk of infection. Abrasions are superficial wounds that usually do not require urgent attention as they tend to heal well on their own with basic wound care. Contusions are bruises that typically resolve on their own without immediate intervention. Ulcerations are open sores that may require intervention but not necessarily immediate action unless complicated by infection or other issues.
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