HESI LPN
CAT Exam Practice Test
1. When should the nurse conduct an Allen’s test?
- A. When obtaining pulmonary artery pressures
- B. To assess for the presence of a deep vein thrombus in the leg
- C. Just before arterial blood gases are drawn peripherally
- D. Prior to attempting a cardiac output calculation
Correct answer: C
Rationale: The correct time to conduct an Allen’s test is just before arterial blood gases are drawn peripherally. This test is performed to assess the adequacy of collateral circulation in the hand before obtaining arterial blood gases. Choice A is incorrect because an Allen’s test is not specifically done when obtaining pulmonary artery pressures. Choice B is incorrect because an Allen’s test is not used to assess deep vein thrombosis. Choice D is incorrect because an Allen’s test is not done specifically before attempting a cardiac output calculation.
2. The mother of a toddler calls the nurse for help as the baby is choking on his food. The nurse determines that the Heimlich maneuver is necessary based on which finding?
- A. Inability of the toddler to cry or speak
- B. Coughing forcefully
- C. Gagging but able to breathe
- D. Wheezing during respiration
Correct answer: A
Rationale: The correct answer is option A: Inability of the toddler to cry or speak. In cases of choking, the inability to cry or speak indicates a severe airway obstruction where the Heimlich maneuver is necessary to clear the obstruction and establish a patent airway. Option B, coughing forcefully, represents a partial obstruction where the child can still move air, making the Heimlich maneuver not immediately necessary. Option C, gagging but able to breathe, suggests a partial obstruction where air is moving, and the child can still breathe, not requiring immediate intervention like the Heimlich maneuver. Option D, wheezing during respiration, is more indicative of a lower airway issue such as asthma rather than an upper airway obstruction that necessitates the Heimlich maneuver.
3. What actions should the nurse take regarding an older adult male who had an abdominal cholecystectomy and has become increasingly confused and disoriented over the past 24 hours, found wandering into another client’s room and returned to his own room by the unlicensed assistive personnel (UAP)? (Select all that apply)
- A. Apply soft upper limb restraints and raise all four bed rails
- B. Report mental status change to the healthcare provider
- C. Assess the client’s breath sounds and oxygen saturation
- D. Assign the UAP to re-assess the client’s risk for falls
Correct answer: B
Rationale: In this situation, the appropriate action for the nurse to take is to report the mental status change to the healthcare provider. Confusion and disorientation post-surgery can be indicative of various factors, such as electrolyte imbalances or respiratory issues, necessitating comprehensive assessment by the healthcare team. Applying restraints and raising bed rails may not address the underlying cause of the confusion, and assigning the UAP to reassess the client's risk for falls does not directly address the cognitive changes observed.
4. The LPN/LVN is caring for a client who has recently been diagnosed with bipolar disorder. The client asks, 'Why do I have to take medication every day?' What is the best response by the nurse?
- A. The medication will help stabilize your mood and prevent mood swings.
- B. You will need to take this medication for the rest of your life.
- C. The medication will help you feel better and more in control of your emotions.
- D. The medication is needed to control your symptoms and help you function better.
Correct answer: A
Rationale: The best response by the nurse is to explain that the medication will help stabilize the client's mood and prevent mood swings. This response provides the client with a clear understanding of how the medication works in managing bipolar disorder. Choice B is not the best response as it may cause unnecessary worry about lifelong medication dependence. Choice C is not as specific in addressing the purpose of the medication for bipolar disorder. Choice D is not as focused on the effect of the medication on mood stabilization, which is crucial in managing bipolar disorder.
5. The healthcare provider prescribes Cytovene 375 mg every 12 hours to infuse over 90 minutes. The pharmacy delivers Cytovene 375 mg in a 150 mL IV bag. How many ml/hour should the nurse program the infusion pump?
- A. 50 ml/hour.
- B. 75 ml/hour.
- C. 100 ml/hour.
- D. 125 ml/hour.
Correct answer: C
Rationale: To infuse 150 mL over 90 minutes, the pump should be set to 100 ml/hour (150 mL / 1.5 hours). This rate ensures that the medication is delivered at the proper rate as prescribed. Choices A, B, and D are incorrect because they do not reflect the correct calculation based on the volume of the IV bag and the infusion duration provided in the question.