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. To evaluate the medication’s effectiveness in a client with a respiratory tract infection, which laboratory values should the nurse monitor?
- A. White blood cell (WBC) count
- B. Sputum culture and sensitivity
- C. Droplet precautions
- D. Protective environment
Correct answer: A
Rationale: The correct answer is A: White blood cell (WBC) count. Monitoring the WBC count helps assess the overall response to infection and the effectiveness of the antibiotic. Sputum culture and sensitivity (choice B) are also important to confirm if the antibiotic is targeting the specific pathogen. Choices C and D, droplet precautions and protective environment, are not laboratory values but rather infection control measures that do not directly evaluate the medication's effectiveness in treating the infection.
3. Several clients on a telemetry unit are scheduled for discharge in the morning, but a telemetry-monitored bed is needed immediately. The charge nurse should make arrangements to transfer which client to another medical unit? The client who is
- A. Learning to self-administer insulin injections after being diagnosed with diabetes mellitus
- B. Ambulatory following coronary artery bypass graft surgery performed six days ago.
- C. Wearing a sling immobilizer following permanent pacemaker insertion earlier that day
- D. Experiencing syncopal episodes resulting from dehydration caused by severe diarrhea
Correct answer: B
Rationale: The correct answer is B because the client who is ambulatory following coronary artery bypass graft surgery performed six days ago is stable enough for transfer compared to the other clients. Choice A should not be transferred as the client is still in the learning phase of self-administering insulin injections after being diagnosed with diabetes mellitus, requiring close monitoring. Choice C should not be transferred immediately after having a permanent pacemaker insertion as they need telemetry monitoring for any complications. Choice D should not be transferred as the client is experiencing syncopal episodes due to dehydration caused by severe diarrhea, requiring immediate intervention and close monitoring on the telemetry unit.
4. What nursing intervention is most important to implement after a client has completed a myelogram?
- A. Lie-sit-stand blood pressure measurement
- B. Abdominal assessment for distention and bowel sounds
- C. Neurovascular assessment of lower extremities
- D. Assessment of skin temperature and turgor
Correct answer: C
Rationale: The correct answer is C: Neurovascular assessment of the lower extremities. After a myelogram, it is crucial to monitor the neurovascular status to detect any signs of complications such as impaired circulation or nerve damage. This assessment helps in identifying early signs of vascular compromise or neurological deficits. Choices A, B, and D are not the priority after a myelogram. Lie-sit-stand blood pressure measurement is not directly related to post-myelogram care. Abdominal assessment and skin assessment are important but not the priority immediately after this procedure.
5. After medicating the client for pain and collecting granules and stones from strained urine, which action is most important for the nurse to implement next?
- A. Send the calculi for laboratory analysis of stone composition.
- B. Evaluate the client for persistent pain.
- C. Assess the clarity of urine.
- D. Encourage high fluid intake to produce urine output of 2L/day.
Correct answer: A
Rationale: Sending the calculi for analysis is crucial in determining the type of stone present. Identifying the stone composition helps in developing an effective treatment plan and preventive measures to avoid future episodes of urolithiasis. This step is essential in providing targeted care for the client. Options B, C, and D are not the most important actions at this point. While evaluating for persistent pain is essential, determining the stone composition takes precedence to guide appropriate interventions.
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