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 is admitted with pyelonephritis, and cultures reveal an Escherichia coli infection. The client is allergic to penicillins, and the healthcare provider prescribed vancomycin IV. The nurse should plan to carefully monitor the client for which finding during IV administration?
- A. Tissue sloughing upon extravasation
- B. Elevated blood pressure and heart rate
- C. Tinnitus and vertigo
- D. Erythema of the face, neck, and chest
Correct answer: C
Rationale: The correct answer is C: Tinnitus and vertigo. Vancomycin can cause ototoxicity and nephrotoxicity, leading to symptoms like tinnitus and vertigo. Monitoring for these adverse effects is crucial to prevent further complications. Choices A, B, and D are incorrect because tissue sloughing, elevated blood pressure and heart rate, and erythema of the face, neck, and chest are not typically associated with vancomycin administration. Therefore, the nurse should focus on monitoring for signs of ototoxicity and nephrotoxicity such as tinnitus and vertigo.
3. 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)
- A. Administer a dose of insulin per sliding scale for a client with type 2 diabetes mellitus (DM)
- B. Obtain postoperative vital signs for a client one day following unilateral knee arthroplasty
- C. Perform daily surgical dressing change for a client who had an abdominal hysterectomy
- D. Initiate patient-controlled analgesia (PCA) pumps for two clients immediately postoperative
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.
4. A client taking clopidogrel reports the onset of diarrhea. Which nursing action should the nurse implement first?
- A. Observe the appearance of the stool
- B. Assess the client’s skin turgor
- C. Review the client’s laboratory values
- D. Auscultate the client’s bowel sounds
Correct answer: A
Rationale: Observing the stool’s appearance should be implemented first as it helps determine the nature and possible severity of the diarrhea, which is essential in managing the side effect. Assessing skin turgor (Choice B) is not the priority in this situation. Reviewing laboratory values (Choice C) can provide additional information but is not the initial step. Auscultating bowel sounds (Choice D) is not the priority when the client is experiencing diarrhea.
5. Which behavior is most likely to result in a breach of client confidentiality?
- A. Discussing a client’s condition during a teaching conference for nursing staff caring for the client
- B. Two nurses planning a client’s care while having lunch in the hospital cafeteria
- C. Nursing students on the same team discussing their assigned client’s conditions
- D. A registered nurse privately sharing personal feelings about a client with another nurse on the team
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.
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