a heparin infusion is prescribed for a client who weighs 220 pounds after administering a bolus dose of 80 unitskg the nurse calculates the infusion r
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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?

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 who is scheduled to have surgery in two hours tells the nurse, 'My doctor was here and used a lot of big words about the surgery, then asked me to sign a paper.' What action should the nurse take?

Correct answer: B

Rationale: The correct action for the nurse to take in this situation is to explain the surgery to the client in clear terms that they can understand. This will help alleviate the client's anxiety and ensure they are well-informed about the procedure they are about to undergo. Choice A is incorrect because while reassurance is important, it does not address the client's specific concern about understanding the surgery. Choice C is not the initial step; the nurse should first attempt to clarify the information themselves. Choice D is not the priority when the client is seeking clarification about the surgery.

3. Which behavior is most likely to result in a breach of client confidentiality?

Correct answer: B

Rationale: The correct answer is B. Discussing client information in a public area, such as a cafeteria, may lead to breaches of confidentiality. Choice A involves discussing a client's condition in a professional setting, which is not likely to result in a breach as it is for educational purposes. Choice C involves nursing students discussing their assigned client's conditions, which is common in a learning environment and not necessarily a breach of confidentiality. Choice D involves a private conversation between healthcare professionals, which is less likely to result in a breach compared to discussing in a public area like a cafeteria where non-authorized individuals may overhear the conversation.

4. The nurse is caring for a group of clients with the help of a practical nurse (PN). Which nursing actions should the nurse assign to the PN? (Select all that apply)

Correct answer: B

Rationale: The correct answer is B. Obtaining postoperative vital signs for a client one day following unilateral knee arthroplasty is a task within the scope of practice for a practical nurse (PN) and contributes to the client's recovery. Administering insulin (Choice A) involves medication administration, which typically requires a higher level of nursing education. Performing daily surgical dressing changes (Choice C) after an abdominal hysterectomy involves wound care management that is usually beyond the scope of practice for a PN. Initiating patient-controlled analgesia pumps (Choice D) is a complex nursing intervention that requires specialized training and knowledge, exceeding the typical responsibilities of a PN.

5. The nurse administers an oral antiviral to a client with shingles. Which finding is most important for the nurse to report to the healthcare provider?

Correct answer: C

Rationale: The correct answer is C: Elevated liver function tests. When administering antivirals, especially orally, monitoring liver function tests is crucial as it may indicate liver toxicity. This finding should be reported promptly to the healthcare provider to prevent further complications. Choice A, decreased white blood cell count, may be expected with certain antivirals but is not the most critical finding in this scenario. Pruritus and muscle aches (choice B) are common side effects of antivirals and do not require immediate reporting. Vomiting and diarrhea (choice D) are also common side effects that may not be as concerning as elevated liver function tests.

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