HESI LPN
CAT Exam Practice
1. The healthcare provider prescribes potassium chloride 25 mEq in 500 ml D5W to infuse over 6 hours. The available 20 ml vial of potassium chloride is labeled '10 mEq/5 ml.' How many ml of potassium chloride should the nurse add to the IV fluid?
- A. 12.5
- B. 5
- C. 10
- D. 20
Correct answer: B
Rationale: To prepare 25 mEq of potassium chloride for the infusion, the nurse should add 5 ml of the 10 mEq/5 ml solution. This concentration provides the required amount of potassium chloride without exceeding the needed volume. Choice A would result in 12.5 mEq, which exceeds the prescribed amount. Choices C and D are incorrect as they do not align with the correct calculation based on the vial concentration.
2. A 17-year-old adolescent is brought to the emergency department by both parents because the adolescent has been coughing and running a fever with flu-like symptoms for the past 24 hours. Which intervention should the nurse implement first?
- A. Obtain a chest X-ray per protocol.
- B. Place a mask on the client’s face.
- C. Assess the client’s temperature.
- D. Determine the client’s blood pressure
Correct answer: B
Rationale: The correct intervention for the nurse to implement first is to place a mask on the client's face. This is crucial to prevent the potential spread of infectious agents to others in the emergency department, considering the presenting symptoms of coughing and fever. Placing a mask helps in containing respiratory secretions and reducing the risk of airborne transmission. Assessing the client’s temperature or blood pressure can be done after ensuring infection control measures. Obtaining a chest X-ray would be a secondary intervention once immediate infection control is addressed.
3. The nurse is preparing to send a client to the cardiac catheterization lab for an angioplasty. Which client report is most important for the nurse to explore further prior to the start of the procedure?
- A. Verbalizes a fear of being in a confined space.
- B. Drank a glass of water in the past 2 hours.
- C. Reports left chest wall pain prior to admission.
- D. Experiences facial swelling after eating crab
Correct answer: C
Rationale: The correct answer is C. Left chest wall pain could indicate ongoing cardiac issues or instability, which needs to be assessed before proceeding with the procedure. This pain could be related to the heart and may suggest a potential risk during the angioplasty. Options A, B, and D do not directly relate to cardiac complications during the procedure, making them less urgent for immediate assessment. Fear of confined spaces, drinking water, and facial swelling after eating crab are not immediate risks to the client's safety in the context of a cardiac catheterization procedure.
4. A young adult male who is being seen at the employee health care clinic for an annual assessment tells the nurse that his mother was diagnosed with schizophrenia when she was his age and that life with a schizophrenic mother was difficult indeed. Which response is best for the nurse to provide?
- A. Ask the client if he is worried about becoming schizophrenic at the age his mother was diagnosed.
- B. Encourage the client to seek genetic counseling to determine his risk for mental illness.
- C. Inform the client that his mother’s schizophrenia has affected his psychological development.
- D. Tell the client that mental illness has a familial predisposition so he should see a psychiatrist.
Correct answer: B
Rationale: Genetic counseling can help assess risk and provide guidance for the client’s concerns about potential hereditary conditions.
5. 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.
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