HESI LPN
CAT Exam Practice Test
1. A heparin infusion is prescribed for a client who weighs 220 pounds. After administering a bolus dose of 80 units/kg, the nurse calculates the infusion rate for the heparin sodium at 18 units/kg/hour. The available solution is Heparin Sodium 25,000 units in 5% Dextrose Injection 250 ml. The nurse should program the infusion pump to deliver how many ml/hour?
- A. 18
- B. 27
- C. 36
- D. 45
Correct answer: B
Rationale: To calculate the infusion rate, first, find the total dose required per hour, which is the patient's weight (220 pounds) multiplied by the prescribed rate (18 units/kg/hour). This equals 3960 units/hour. Next, determine how many ml of the solution contain 25,000 units; this is 250 ml. Divide the total dose required per hour (3960 units) by the units per ml (25,000 units/250 ml) to find how many ml are needed per hour. This results in 27 ml/hour. Therefore, the nurse should program the infusion pump to deliver 27 ml/hour. Choice A (18) is incorrect as it does not account for the concentration of the heparin solution. Choices C (36) and D (45) are incorrect as they do not reflect the accurate calculations based on the patient's weight and the heparin concentration in the solution.
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 nursing staff on a medical unit includes a registered nurse (RN), practical nurse (PN), and an unlicensed assistive personnel (UAP). Which task should the charge nurse assign to the RN?
- A. Transport a client who is receiving IV fluid to the radiology department
- B. Administer PRN oral analgesics to a client with a history of chronic pain
- C. Supervise a newly hired graduate nurse during an admission assessment
- D. Complete ongoing focused assessments of a client with wrist restraints
Correct answer: C
Rationale: The correct answer is C because supervising a newly hired graduate nurse during an admission assessment is a task that falls within the registered nurse's scope of practice. Registered nurses are responsible for overseeing and delegating tasks, especially to new staff, to ensure proper assessment and care delivery. Choices A, B, and D involve tasks that can be appropriately assigned to practical nurses or unlicensed assistive personnel as they are within their scope of practice. Transporting a client, administering oral analgesics, and completing focused assessments do not require the advanced knowledge and skills of a registered nurse.
4. A client is admitted with the diagnosis of Wernicke’s syndrome. What assessment finding should the nurse use in planning the client’s care?
- A. Right lower abdominal pain
- B. Confusion
- C. Depression
- D. Peripheral neuropathy
Correct answer: B
Rationale: Confusion is a key symptom of Wernicke’s syndrome, which is due to thiamine deficiency. Wernicke’s syndrome is characterized by a triad of symptoms known as the classic triad, which includes confusion, ataxia, and ophthalmoplegia. Right lower abdominal pain, depression, and peripheral neuropathy are not typically associated with Wernicke’s syndrome, making them incorrect choices for this question.
5. The nurse is conducting intake interviews of children at a city clinic. Which child is most susceptible to contracting lead poisoning?
- A. An adolescent who works part-time in a paint factory
- B. A 2-year-old who plays on aging outdoor playground equipment
- C. A 10-year-old who has Type 1 diabetes mellitus
- D. An 8-year-old who lives in a housing project
Correct answer: B
Rationale: Children playing on aging playground equipment are at higher risk of lead poisoning due to potential exposure from old paint. This is because deteriorating paint on older playground equipment may contain lead, which can be ingested by young children. Choices A, C, and D do not directly involve potential exposure to lead paint, making them less susceptible to lead poisoning compared to a child playing on aging playground equipment.
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