HESI LPN
CAT Exam Practice
1. The client had gastric bypass surgery yesterday. Which intervention is most important for the nurse to implement during the first 24 postoperative hours?
- A. Insert an indwelling urinary catheter
- B. Monitor for the appearance of an incisional hernia
- C. Instruct the client to eat small frequent meals
- D. Measure hourly urinary output
Correct answer: D
Rationale: Monitoring hourly urinary output is crucial during the first 24 postoperative hours to assess kidney function, fluid balance, and early detection of complications like dehydration or inadequate kidney perfusion. Inserting an indwelling urinary catheter is not routinely necessary after gastric bypass surgery unless there are specific indications. Monitoring for an incisional hernia is important but not the highest priority in the immediate postoperative period. Instructing the client to eat small frequent meals is essential for long-term dietary management after gastric bypass surgery, but not the most critical intervention during the initial 24 hours.
2. To evaluate the medication’s effectiveness in a client with a respiratory tract infection, which laboratory values should the nurse monitor?
- A. White blood cell (WBC) count
- B. Sputum culture and sensitivity
- C. Droplet precautions
- D. Protective environment
Correct answer: A
Rationale: The correct answer is A: White blood cell (WBC) count. Monitoring the WBC count helps assess the overall response to infection and the effectiveness of the antibiotic. Sputum culture and sensitivity (choice B) are also important to confirm if the antibiotic is targeting the specific pathogen. Choices C and D, droplet precautions and protective environment, are not laboratory values but rather infection control measures that do not directly evaluate the medication's effectiveness in treating the infection.
3. A client with endometrial carcinoma is receiving brachytherapy and has radioactive Cesium loaded in a vaginal applicator. What action should the nurse implement?
- A. Wear a dosimeter film badge when in the client’s room
- B. Spend 30 minutes at the bedside when providing direct care
- C. Change the linens every day after assisting with a bed bath
- D. Use gloves to remove the applicator if it is dislodged in the bed
Correct answer: A
Rationale: The correct action for the nurse to implement when caring for a client with a radioactive Cesium-loaded vaginal applicator during brachytherapy is to wear a dosimeter film badge when in the client’s room. Wearing a dosimeter badge is essential to monitor radiation exposure and ensure the safety of healthcare providers. Choice B is incorrect as the duration is not specified and unnecessary. Choice C is incorrect as changing linens daily does not directly relate to radiation safety. Choice D is incorrect as using gloves to remove the applicator if dislodged is important but not the primary action to monitor radiation exposure.
4. A client is receiving lidocaine IV at 3 mg/minute. The pharmacy dispenses a 500 ml IV solution of normal saline (NS) with 2 grams of lidocaine. The nurse should regulate the infusion pump to deliver how many ml/hour?
- A. 18
- B. 27
- C. 36
- D. 45
Correct answer: D
Rationale: The infusion rate is calculated based on the concentration of lidocaine and the prescribed rate of infusion. First, convert lidocaine's weight to milligrams (2 grams = 2000 mg). Then, use the formula: (Total volume in ml * dose in mg) / 60 minutes. For this case, (500 ml * 2000 mg) / 60 minutes = 45 ml/hour. Therefore, the correct answer is D. Choices A, B, and C are incorrect as they do not reflect the accurate calculation based on the provided concentration and infusion rate.
5. Following morning care, a client with C-5 spinal cord injury who is sitting in a wheelchair becomes flushed and complains of a headache. Which intervention should the nurse implement first?
- A. Check for any kinks or obstructions in the client’s Foley tubing
- B. Assess the client’s blood pressure every 15 minutes
- C. Administer a prescribed PRN dose of hydralazine (Apresoline)
- D. Educate the client on recognizing symptoms of dysreflexia
Correct answer: B
Rationale: In a client with a C-5 spinal cord injury experiencing flushing and a headache, the priority intervention is to assess the client's blood pressure every 15 minutes. These symptoms could indicate autonomic dysreflexia, a potentially life-threatening condition. Assessing the blood pressure is crucial to identify and address this emergency situation promptly. Checking for kinks or obstructions in the Foley tubing (Choice A) is important but not the priority in this scenario. Administering hydralazine (Choice C) without knowing the blood pressure could be harmful as it may lead to a sudden drop in blood pressure. Educating the client on recognizing symptoms of dysreflexia (Choice D) is important for long-term management but is not the immediate action needed in this acute situation.
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