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. Which client requires careful nursing assessment for signs and symptoms of hypomagnesemia?
- A. A young adult client with intractable vomiting from food poisoning
- B. A client who developed hyperparathyroidism in late adolescence
- C. A middle-aged male client in renal failure following an unsuccessful kidney transplant
- D. A female client who is overzealous with her intake of simple carbohydrates
Correct answer: A
Rationale: The correct answer is A. Vomiting can lead to significant loss of magnesium, causing hypomagnesemia. In this scenario, the young adult client with intractable vomiting from food poisoning is at higher risk of developing hypomagnesemia due to the loss of magnesium through vomiting. Choices B, C, and D are less likely to present with hypomagnesemia. Hyperparathyroidism (B) is associated with hypercalcemia, renal failure (C) can lead to hypermagnesemia, and overconsumption of simple carbohydrates (D) is not directly linked to magnesium imbalances.
3. The nurse is planning to assess a client's oxygen saturation to determine if additional oxygen is needed via nasal cannula. The client has bilateral below-the-knee amputations and weak, thread pedal pulses. What action should the nurse take?
- A. Document that an accurate oxygen saturation reading cannot be obtained
- B. Elevate the client's hands for five minutes prior to obtaining a reading from the finger
- C. Increase the oxygen based on the client's breathing patterns and lung sounds
- D. Place the oximeter clip on the earlobe to obtain the oxygen saturation reading
Correct answer: D
Rationale: Placing the oximeter clip on the earlobe is appropriate for clients with poor peripheral circulation, such as those with weak and thread pedal pulses due to bilateral below-the-knee amputations. This placement can provide a more accurate reading of oxygen saturation in such clients. Choice A is incorrect because alternative methods, such as earlobe placement, can be used to obtain accurate readings. Choice B is unnecessary and not related to obtaining an accurate oxygen saturation reading. Choice C is incorrect because increasing oxygen without assessing the oxygen saturation level first can be detrimental and is not based on evidence-based practice.
4. The nurse is planning care for a family whose children did not receive childhood immunizations. After one of the children contracted mumps, the father is diagnosed with orchitis. Which intervention should be included in the father's plan of care?
- A. Use of bedrest with scrotal support
- B. Administration of antibiotics for 10 days
- C. Applying heat to promote the healing process
- D. Using an ice pack to reduce scrotal pain
Correct answer: A
Rationale: For orchitis, the recommended intervention is bedrest with scrotal support. This helps reduce swelling and discomfort in the scrotum. Antibiotics are generally not required for viral orchitis, so administering antibiotics for 10 days (Choice B) is not indicated. Applying heat (Choice C) may worsen swelling and should be avoided. Using an ice pack (Choice D) is not the preferred method for managing orchitis; it may not be as effective as providing support and rest for the scrotum.
5. Based on the information provided in this client’s medical record during labor, which intervention should the nurse implement?
- A. Apply oxygen at 10 L per minute via mask
- B. Stop the oxytocin infusion
- C. Turn the client to the right lateral position
- D. Continue monitoring the progress of labor
Correct answer: C
Rationale: Turning the client to the right lateral position is essential as it can improve fetal oxygenation and uterine blood flow, promoting better labor outcomes. This intervention helps relieve pressure on blood vessels, enhancing blood flow to the placenta and improving oxygen supply to the fetus. Applying oxygen at a specific rate may not address the underlying issue of compromised blood flow and oxygenation. Stopping the oxytocin infusion is not the priority unless medically indicated as it can affect labor progression. While monitoring the progress of labor is important, actively addressing the compromised fetal oxygenation and uterine blood flow by changing the client's position takes precedence in this scenario.
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