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. To reduce the risk of symptoms exacerbation for a client with multiple sclerosis (MS), which instructions should the nurse include in the client’s discharge plan? (Select all that apply).
- A. Practice relaxation exercises
- B. Limit fluids to avoid bladder distention
- C. Space activities to allow for rest periods
- D. Avoid persons with infections
Correct answer: A
Rationale: The correct instruction to include in the discharge plan for a client with MS to reduce symptom exacerbation is practicing relaxation exercises. Relaxation exercises can help manage MS symptoms by reducing stress. Limiting fluids to avoid bladder distention is not appropriate as adequate hydration is essential for overall health and helps prevent complications like urinary tract infections. While spacing activities to allow for rest periods can be beneficial for general well-being, it is not directly related to symptom exacerbation in MS. Avoiding persons with infections is important to prevent infections, but it is not specifically targeted at reducing MS symptom exacerbation.
3. A client who is newly diagnosed with type 2 diabetes mellitus (DM) receives a prescription for metformin (Glucophage) 500 mg PO twice daily. What information should the nurse include in this client’s teaching plan? (Select all that apply.)
- A. Take an additional dose for signs of hyperglycemia
- B. Recognize signs and symptoms of hypoglycemia.
- C. Report persistent polyuria to the healthcare provider.
- D. Use sliding scale insulin for finger stick glucose elevation.
Correct answer: D
Rationale: The correct answer is D. Metformin does not require additional doses for hyperglycemia, and sliding scale insulin is not typically used with metformin. It is important for the client to recognize signs and symptoms of hypoglycemia, report persistent polyuria to the healthcare provider, and take the medication with meals. Teaching the client to use sliding scale insulin for finger stick glucose elevation is not appropriate in this case because metformin is the prescribed medication, and its mechanism of action differs from insulin therapy. The client should be educated on the importance of taking metformin with meals to reduce gastrointestinal side effects and to report any persistent polyuria, which could indicate poor blood sugar control.
4. Several clients on a busy antepartum unit are scheduled for procedures that require informed consent. Which situation should the nurse explore further before witnessing the client's signature on the consent form?
- A. The client was medicated for pain with a narcotic analgesic IM 6 hours ago
- B. A 15-year-old primigravida who has been self-supporting for the past 6 months
- C. The obstetrician explained a procedure that a neurologist will perform
- D. The client is illiterate but verbalizes understanding and consent for the procedure
Correct answer: D
Rationale: The correct answer is D because an illiterate client may require additional support to ensure they fully comprehend the information provided in the informed consent process. It is crucial to confirm that the client truly understands the nature of the procedure, its risks, and benefits. While it is important to assess pain control (choice A), a client's previous medication administration does not directly impact their ability to understand the consent process. Choice B, a 15-year-old primigravida who has been self-supporting, may legally provide informed consent depending on the jurisdiction and circumstances, so this situation may not require further exploration. Choice C, explaining a procedure by a different specialist, does not necessarily require additional exploration before witnessing the client's consent.
5. When administering diazepam, a benzodiazepine, 10 mg IV push PRN for a client with alcohol withdrawal symptoms, which actions should the nurse implement? (Select all that apply)
- A. Protect the medication from light exposure
- B. Monitor for changes in level of consciousness
- C. Observe for onset of generalized bruising or bleeding
- D. Perform ongoing assessment of respiratory status
Correct answer: D
Rationale: When administering diazepam for a client with alcohol withdrawal symptoms, it is crucial to perform ongoing assessment of respiratory status. Diazepam can lead to respiratory depression, emphasizing the need for continuous monitoring to detect any signs of respiratory distress early. Protecting the medication from light exposure is a general guideline for some drugs but is not a specific concern for diazepam. Observing for bruising or bleeding is not directly associated with the administration of diazepam for alcohol withdrawal symptoms, making choices A and C incorrect.
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