HESI LPN
HESI CAT Exam 2022
1. 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.
2. A client with a large pleural effusion undergoes a thoracentesis. Following the procedure, which assessment finding warrants immediate intervention by the nurse?
- A. The client has asymmetrical chest wall expansion
- B. The client complains of pain at the insertion site
- C. The client's chest x-ray indicates decreased pleural effusion
- D. The client's arterial blood gases show pH 7.35, PaO2 85, PaCO2 35, HCO3 26
Correct answer: A
Rationale: Asymmetrical chest wall expansion is a critical finding post-thoracentesis as it may suggest a pneumothorax, requiring immediate intervention to prevent further complications. The other options, such as pain at the insertion site (Choice B), decreased pleural effusion on chest x-ray (Choice C), and normal arterial blood gases within acceptable ranges (Choice D) do not indicate an immediate need for intervention like asymmetrical chest wall expansion does.
3. A client collapses while showering and is found by the nurse while making rounds. The client is not breathing and does not have a palpable pulse. The nurse obtains the Automated External Defibrillator (AED). What action should the nurse implement next?
- A. Follow the prompts of the AED
- B. Apply the AED pads to the client’s chest
- C. Wipe the client’s chest dry
- D. Move the client from the bathroom
Correct answer: B
Rationale: Applying the AED pads is the immediate next step after obtaining the AED in a cardiac arrest situation. Placing the pads correctly on the client's chest is crucial for the AED to analyze the heart rhythm accurately and deliver a shock if needed. Following the prompts of the AED comes after the pads are in place. Wiping the client's chest dry or moving the client from the bathroom are not priorities at this critical moment and may delay life-saving interventions.
4. 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.
5. A 10-year-old who has terminal brain cancer asks the nurse, 'What will happen to my body when I die?' How should the nurse respond?
- A. The heart will stop beating, and you will stop breathing.
- B. You will go to sleep and not wake up.
- C. Your body will stop functioning, and you will no longer feel pain.
- D. You will feel very tired, and your body will shut down slowly.
Correct answer: C
Rationale: The correct answer is C because it provides a truthful yet sensitive response to the child's question. Saying that the body will stop functioning and that there will be no more pain helps the child understand what to expect without unnecessary details or causing distress. Choice A is too technical and may not be suitable for a child. Choice B might give the impression of a peaceful passing, which may not always be the case. Choice D introduces the concept of feeling tired, which might not be accurate or helpful in this context.
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