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. An 18-year-old gravida 1, at 41-weeks gestation, is undergoing an oxytocin (Pitocin) induction and has an epidural catheter in place for pain control. With each of the last three contractions, the nurse notes a late deceleration. The client is repositioned, and oxygen provided, but the late decelerations continue to occur with each contraction. What action should the nurse take first?
- A. Prepare for immediate cesarean birth
- B. Turn off the oxytocin (Pitocin) infusion
- C. Notify the anesthesiologist that the epidural infusion needs to be disconnected
- D. Apply an internal fetal monitoring device and continue to monitor carefully
Correct answer: B
Rationale: In the scenario described, the nurse notes late decelerations during contractions despite repositioning and oxygen administration. Late decelerations are often associated with uteroplacental insufficiency, which can be exacerbated by increased uterine activity stimulated by oxytocin. The initial action to manage late decelerations is to turn off the oxytocin infusion to reduce uterine stimulation. This step aims to improve fetal oxygenation and prevent further stress on the fetus. Immediate cesarean birth may be necessary if the late decelerations persist or worsen despite discontinuing the oxytocin infusion. Notifying the anesthesiologist to disconnect the epidural infusion or applying an internal fetal monitoring device are not the first-line interventions for managing late decelerations.
3. A client with a history of dementia has become increasingly confused at night and is picking at an abdominal surgical dressing and the tape securing the intravenous (IV) line. The abdominal dressing is no longer occlusive, and the IV insertion site is pink. What intervention should the nurse implement?
- A. Replace the IV site with a smaller gauge.
- B. Redress the abdominal incision.
- C. Leave the lights on in the room at night.
- D. Apply soft bilateral wrist restraints.
Correct answer: C
Rationale: The correct intervention for a client with dementia who is becoming increasingly confused at night and interfering with dressings and IV lines is to leave the lights on in the room at night. This intervention can help reduce confusion and disorientation. Choice A is incorrect because changing the IV site gauge is not the priority in this situation. Choice B is not necessary unless there are signs of infection or other complications at the abdominal incision site, which are not mentioned in the scenario. Choice D should be avoided as using restraints should be a last resort and is not indicated in this case.
4. The nurse assesses a 5-year-old child who has been experiencing frequent headaches and vomiting. The nurse notices that the child is lethargic and has a positive Brudzinski sign. Which action should the nurse implement first?
- A. Perform a complete neurological examination
- B. Measure the child’s head circumference
- C. Check the child’s blood glucose level
- D. Notify the healthcare provider immediately
Correct answer: D
Rationale: The correct action for the nurse to implement first is to notify the healthcare provider immediately. The presence of lethargy and a positive Brudzinski sign in a child experiencing frequent headaches and vomiting may indicate a serious condition like meningitis. Prompt notification of the healthcare provider is crucial for timely evaluation and initiation of appropriate treatment. Choice A is incorrect because while a neurological examination may be necessary, it is not the priority when a potentially serious condition like meningitis is suspected. Choice B is incorrect as measuring the child's head circumference is not the most immediate action to take in this situation. Choice C is also incorrect as checking the child's blood glucose level, although important in some cases, is not the priority when a child presents with symptoms suggestive of meningitis.
5. After witnessing a preoperative client sign the surgical consent form, what are the legal implications of the nurse's signature on the client's form as a witness?
- A. The client voluntarily grants permission for the procedure to be done
- B. The surgeon has explained to the client why the surgery is necessary
- C. The client is competent to sign the consent without impairment of judgment
- D. The client understands the risks and benefits associated with the procedure
Correct answer: C
Rationale: The nurse's signature on the consent form signifies that the client is competent to sign the consent without impairment of judgment. This legal implication ensures that the client possesses the necessary capacity to make decisions about their healthcare. Choice A is incorrect because the nurse's signature does not imply the client's voluntary permission for the procedure. Choice B is incorrect as it pertains to the surgeon's responsibility, not the nurse's. Choice D is incorrect as the nurse's signature does not confirm the client's understanding of the risks and benefits associated with the procedure.
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