HESI LPN
HESI CAT Exam Quizlet
1. An 8-year-old child who weighs 60 pounds receives an order for Polycilin (Ampicillin) suspension 25 mg/kg/day divided into a dose every 8 hours. The medication is labeled '125 mg/5 ml'. How many ml should the nurse administer per dose every 8 hours?
- A. 5
- B. 10
- C. 15
- D. 20
Correct answer: A
Rationale: Calculate the daily dose first: 60 pounds x 25 mg/kg = 1500 mg/day. Divide by 3 doses = 500 mg/dose. Convert to mL: (500 mg / 125 mg) x 5 ml = 20 ml. However, the question asks for the dose per administration every 8 hours, which is 1/3 of the daily dose. So, the correct calculation should be (20 ml / 3) = 6.67 ml, which rounds to 5 ml. Therefore, the correct answer is 5 ml. Choice B (10 ml) is incorrect because it doesn't consider the frequency of dosing. Choice C (15 ml) is incorrect as it overestimates the dose. Choice D (20 ml) is incorrect as it represents the total daily dose, not the dose per administration every 8 hours.
2. A client with major depression who is taking fluoxetine calls the psychiatric clinic reporting being more agitated, irritable, and anxious than usual. Which intervention should the nurse implement?
- A. Tell the client to have a complete blood count (CBC) drawn
- B. Instruct the client to seek medical attention immediately
- C. Encourage them to take the medication at night with a snack
- D. Explain that these are common side effects of the medication
Correct answer: B
Rationale: Increased agitation, irritability, and anxiety can be signs of serotonin syndrome or other serious side effects, not common side effects of fluoxetine. Instructing the client to seek medical attention immediately is crucial to address any potential serious adverse reactions. Option A is unnecessary as a CBC would not address the symptoms described. Option C is not the priority when serious side effects are suspected. Option D is incorrect as these symptoms should not be dismissed as common side effects.
3. 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.
4. An infant is receiving penicillin G procaine 220,000 units IM. The drug is supplied as 600,000 units/ml. How many ml should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth)
- A. 0.4
- B.
- C.
- D.
Correct answer: A
Rationale: To calculate the volume to administer, use the formula: Desired dose (220,000 units) / Dose on hand (600,000 units) x Volume of the available dose (1 ml). This results in 0.4 ml to be administered. Choice A is correct. Choice B, C, and D are incorrect as they are not provided.
5. A 60-year-old male with type 2 diabetes mellitus tells the nurse that he is going to join a gym and start working out. Which information is most important for the nurse to obtain?
- A. Recent serum cholesterol levels
- B. Presence of calf pain during exercise
- C. Average weight gain or loss in the last year
- D. Exercise tolerance test with EKG results
Correct answer: B
Rationale: The most important information for the nurse to obtain in this scenario is the presence of calf pain during exercise. Calf pain during exercise could indicate peripheral vascular issues, such as peripheral artery disease, which is crucial to address before starting an exercise program. High cholesterol levels (choice A) may be important but are not as immediately relevant as assessing for peripheral vascular issues. Average weight gain or loss (choice C) may provide some insight into the patient's overall health status but is not as critical as assessing for potential vascular complications. An exercise tolerance test with EKG results (choice D) may be valuable in assessing cardiovascular fitness but is not as crucial as evaluating for peripheral vascular issues given the patient's symptoms.
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