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 client with diabetic peripheral neuropathy has been taking pregabalin for 4 days. Which finding indicates to the nurse that the medication is effective?
- A. Granulating tissue in foot ulcer
- B. Full volume of pedal pulse
- C. Reduced level of pain
- D. Improved visual activity
Correct answer: C
Rationale: The correct answer is C: 'Reduced level of pain.' Pregabalin is used to manage neuropathic pain, so a reduction in pain indicates the medication's effectiveness in this case. Granulating tissue in a foot ulcer and the full volume of a pedal pulse are not direct indicators of pregabalin's effectiveness in managing neuropathic pain. Improved visual activity is not related to the effects of pregabalin in diabetic peripheral neuropathy.
3. The nurse is teaching a class on child care to new parents. Which instruction should be included about the prevention of rotavirus infection in infants who are starting to eat foods?
- A. Keep house pets away from the food preparation area
- B. Avoid feeding infants fresh fruits
- C. Use only lactose-free formulas
- D. Wash hands before any food preparation
Correct answer: D
Rationale: The correct answer is D: Wash hands before any food preparation. Rotavirus is a highly contagious virus that can be prevented by maintaining proper hygiene. Washing hands before handling food can help prevent the spread of infections, including rotavirus. Choices A, B, and C are incorrect because while they are good practices for general hygiene and infant care, they are not specifically targeted at preventing rotavirus infection.
4. A client is admitted to a medical unit with the diagnosis of gastritis and chronic heavy alcohol abuse. What should the nurse administer to prevent the development of Wernicke's syndrome?
- A. Lorazepam (Ativan)
- B. Famotidine (Pepcid)
- C. Thiamine (Vitamin B1)
- D. Atenolol (Tenormin)
Correct answer: C
Rationale: Thiamine supplementation is critical in preventing Wernicke's syndrome, especially in clients with chronic alcohol use. Wernicke's syndrome is a neurological disorder caused by thiamine deficiency. Lorazepam is a benzodiazepine used for anxiety and not for preventing Wernicke's syndrome. Famotidine is an H2 blocker used to reduce stomach acid production but does not prevent Wernicke's syndrome. Atenolol is a beta-blocker used for hypertension and angina, not for preventing Wernicke's syndrome.
5. An older male resident of a long-term care facility has been scratching his legs for the past 2 days. Which intervention should the nurse implement?
- A. Explain the importance of bathing or showering daily
- B. Encourage fluid intake of at least 2,000 ml daily
- C. Keep the legs covered as much as possible
- D. Apply emollient to the affected area at least twice daily
Correct answer: D
Rationale: The correct intervention for the nurse to implement in this scenario is to apply emollient to the affected area at least twice daily. This is because applying emollients helps address dry skin, which is a common cause of itching in older adults. Explaining the importance of bathing or showering daily (Choice A) may be helpful for general hygiene but may not specifically address the itching. Encouraging fluid intake (Choice B) and keeping the legs covered (Choice C) are not directly related to addressing the itching caused by dry skin.
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