HESI LPN
CAT Exam Practice Test
1. Which type of Leukocyte is involved with allergic responses and the destruction of parasitic worms?
- A. Neutrophils
- B. Lymphocytes
- C. Eosinophils
- D. Monocytes
Correct answer: C
Rationale: Eosinophils are the correct answer. Eosinophils are specialized white blood cells that play a crucial role in allergic responses and combating parasitic infections. They release substances to destroy parasites and modulate allergic reactions. Neutrophils (Choice A) are mainly involved in fighting bacterial infections. Lymphocytes (Choice B) play a key role in the immune response, including antibody production, but are not primarily responsible for combating parasites or allergic responses. Monocytes (Choice D) are involved in immune defense, differentiating into macrophages or dendritic cells, but they are not mainly associated with allergic responses or parasitic worm destruction.
2. 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.
3. In what order should the nurse assess a lethargic one-hour-old infant brought to the nursery?
- A. Heel stick
- B. Respirations
- C. Heart rate
- D. Temperature
Correct answer: D
Rationale: When assessing a lethargic one-hour-old infant, the nurse should prioritize assessing the most critical parameters first. Temperature and heart rate are vital signs that provide immediate information about the infant's well-being. Therefore, the correct order of assessment should be temperature, heart rate, respirations, and then a heel stick. Temperature is crucial to determine if the infant is hypothermic or hyperthermic, while heart rate gives insight into the circulatory system's function. Respirations follow to evaluate the infant's breathing pattern. Lastly, the heel stick is important for certain screenings but is not as urgent as evaluating temperature and heart rate in a lethargic infant.
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. A client who is diagnosed with amyotrophic lateral sclerosis (ALS) is having difficulty swallowing and articulating words. Which intervention is most important to include in this client’s plan of care?
- A. Encourage speaking slowly and articulating words
- B. Sit upright and flex chin forward while swallowing
- C. Position a communication board at the bedside
- D. Provide feeding utensils with large grip handles
Correct answer: B
Rationale: The correct intervention for a client with ALS experiencing difficulty swallowing and articulating words is to sit upright and flex the chin forward while swallowing. This position helps manage dysphagia associated with ALS by facilitating the swallowing process. Encouraging speaking slowly and articulating words (Choice A) may be helpful for speech clarity but does not address the swallowing issue. Positioning a communication board (Choice C) would not directly address the swallowing difficulty. Providing feeding utensils with large grip handles (Choice D) is not the priority intervention for managing dysphagia in ALS.
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