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 nurse working on an endocrine unit should see which client first?
- A. An adolescent male with diabetes who is arguing about his insulin dose.
- B. An older client with Addison’s disease whose current blood sugar level is 62mg/dl (3.44 mmol/l).
- C. An adult with a blood sugar of 384mg/dl (21.31mmol/l) and urine output of 350 ml in the last hour.
- D. A client taking corticosteroids who has become disoriented in the last two hours.
Correct answer: B
Rationale: The correct answer is B. The client with Addison’s disease and a blood sugar level of 62mg/dl (3.44 mmol/l) is experiencing hypoglycemia, which can progress to adrenal crisis. This situation requires immediate attention to prevent further complications. Choices A, C, and D, although concerning, do not pose an immediate life-threatening risk compared to the client with Addison’s disease and hypoglycemia. The adolescent arguing about his insulin dose can be addressed after stabilizing the client with Addison’s disease. The adult with high blood sugar and increased urine output may have hyperglycemia but is not in immediate danger. The client taking corticosteroids who is disoriented needs evaluation but is not in an acute life-threatening condition as the client with hypoglycemia.
3. The nurse is assessing a client with left-sided heart failure who reports nocturia and dyspnea. The nurse identifies pulsus alternans and crackles in all lung fields. Which action is best to include in the client’s plan of care?
- A. Begin client education about positive inotropic medications.
- B. Place the client in Trendelenburg position.
- C. Prepare the client for an emergency cardiac catheterization.
- D. Monitor serum Troponin, CK, and CK-MB levels.
Correct answer: A
Rationale: In the scenario described, the client is exhibiting signs of left-sided heart failure, such as dyspnea, nocturia, pulsus alternans, and crackles in all lung fields. Positive inotropic medications are commonly used in the treatment of heart failure to improve cardiac contractility and output. Therefore, beginning client education about positive inotropic medications is the best action to include in the client's plan of care. Choice B is incorrect because placing the client in Trendelenburg position is not indicated in the management of left-sided heart failure. Choice C is incorrect as emergency cardiac catheterization is not typically the initial intervention for left-sided heart failure. Choice D is incorrect as monitoring serum Troponin, CK, and CK-MB levels is more pertinent to assessing for myocardial infarction rather than managing heart failure.
4. A client is admitted to the labor and delivery unit in early labor, and the nurse assesses the status of her contractions. The frequency of contractions is most accurately evaluated by counting the minutes and seconds in which manner?
- A. From the peak of one contraction to the peak of the next contraction
- B. From the beginning of one contraction to the end of that contraction
- C. From the beginning of one contraction to the beginning of the next contraction
- D. From the end of one contraction to the beginning of the next contraction
Correct answer: C
Rationale: The frequency of contractions is measured from the beginning of one contraction to the beginning of the next contraction. This timing is crucial in determining the progress of labor. Choice A, measuring from peak to peak, is incorrect as it assesses the duration between the highest points of contractions, which is not how frequency is calculated. Choice B, measuring from the beginning to the end of one contraction, is incorrect as it does not consider the start of the next contraction. Choice D, measuring from the end of one contraction to the beginning of the next contraction, is incorrect as it misses the initial onset of the following contraction.
5. A male client approaches the nurse with an angry expression on his face and raises his voice, saying, “My roommate is the most selfish, self-centered, angry person I have ever met. If he loses his temper one more time with me, I am going to punch him out.” The nurse recognizes that the client is using which defense mechanism?
- A. Denial
- B. Splitting
- C. Projection
- D. Rationalization
Correct answer: C
Rationale: The client is projecting his feelings of anger and frustration onto his roommate, attributing his own feelings to the other person. Projection is a defense mechanism where individuals attribute their thoughts, feelings, or motives onto another person. In this scenario, the client is displacing his anger onto his roommate, thereby using projection as a defense mechanism. Denial (choice A) is refusing to acknowledge an aspect of reality. Splitting (choice B) involves viewing people as all good or all bad. Rationalization (choice D) is creating logical explanations to justify unacceptable behavior.
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