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. The nurse is measuring the output of an infant admitted for vomiting and diarrhea. During a 12-hour shift, the infant drinks 4 ounces of Pedialyte, vomits 25 ml, and voids twice. The dry diaper weighs 105 grams. Which computer documentation should the nurse enter in the infant’s record?
- A. Subtract vomitus from 120 ml Pedialyte, then document 95 ml oral intake.
- B. Compare the difference between the infant’s current weight and admission weight.
- C. Document on the flow sheet that the infant voided twice and vomited 25 ml.
- D. Calculate the difference in wet and dry diapers and document 80 ml urine.
Correct answer: C
Rationale: The correct answer is to document on the flow sheet that the infant voided twice and vomited 25 ml. This choice accurately reflects the need for accurate documentation of intake and output, essential for monitoring the infant's hydration status. Choice A is incorrect because the oral intake should not be calculated by subtracting vomitus from the oral intake. Choice B is incorrect because it does not address the specific documentation related to the infant's output. Choice D is incorrect as it focuses on calculating urine output based on diaper weight, which is not the primary concern in this scenario.
3. A high school football player comes to the clinic complaining of severe acne. The mother reports recent behavior changes, including irritability and suspiciousness of friends. The nurse’s assessment reveals an elevated blood pressure. Which intervention should the nurse implement first?
- A. Encourage the client to see a dermatologist
- B. Refer the adolescent to a substance abuse program
- C. Suggest a low-salt, low-fat, and caffeine-free diet
- D. Inquire about a possible use of anabolic steroids
Correct answer: D
Rationale: In this scenario, the high school football player presenting with severe acne, behavior changes, elevated blood pressure, and suspicion of friends suggests the possible use of anabolic steroids. Anabolic steroid use can lead to such symptoms. Therefore, the nurse should first inquire about the possible use of anabolic steroids to address the root cause of the presenting issues. Encouraging the client to see a dermatologist (Choice A) may be necessary but addressing the underlying cause is crucial first. Referring the adolescent to a substance abuse program (Choice B) is premature without confirming steroid use. Suggesting a low-salt, low-fat, and caffeine-free diet (Choice C) is not the priority in this situation where a serious issue like anabolic steroid use needs immediate attention.
4. After implementing a new fall prevention protocol on the nursing unit, which action by the nurse-manager best evaluates the protocol’s effectiveness?
- A. Compare the number of falls that occurred before and after protocol implementation
- B. Analyze data that reflects the unit’s costs incurred due to the new protocol
- C. Conduct a chart review on the unit to determine the number of clients at risk for falling
- D. Consult with the physical therapist to evaluate the benefits of the new fall protocol
Correct answer: A
Rationale: The best way to evaluate the effectiveness of a new fall prevention protocol is by comparing the number of falls that occurred before and after its implementation. This direct comparison helps in assessing the impact of the protocol on reducing fall rates. Choices B, C, and D do not directly measure the effectiveness of the protocol. Analyzing costs incurred (Choice B), conducting a chart review (Choice C), or consulting with a physical therapist (Choice D) may provide valuable information but do not specifically evaluate the protocol's effectiveness in preventing falls.
5. A client is admitted for an exacerbation of heart failure (HF) and is being treated with diuretics for fluid volume excess. In planning nursing care, which interventions should the nurse include? (Select all that apply)
- A. Encourage oral fluid intake of 3,000 ml/day
- B. Observe for evidence of hypokalemia
- C. Teach the client how to restrict dietary sodium
- D. Monitor PTT, PT, and INR lab values
Correct answer: B
Rationale: The correct interventions to include when a client with heart failure is being treated with diuretics for fluid volume excess are to observe for evidence of hypokalemia. Diuretics can lead to potassium loss, resulting in hypokalemia. Monitoring for this electrolyte imbalance is crucial. Encouraging oral fluid intake of 3,000 ml/day may exacerbate fluid volume excess in a client with heart failure. Teaching the client how to restrict dietary sodium is important in managing heart failure, but it is not directly related to the use of diuretics for fluid volume excess. Monitoring PTT, PT, and INR lab values is not typically associated with diuretic therapy for heart failure but rather with anticoagulant therapy.
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