HESI LPN
HESI PN Exit Exam 2023
1. Which electrolyte imbalance is most commonly associated with seizures?
- A. Hyponatremia
- B. Hypercalcemia
- C. Hyperkalemia
- D. Hypokalemia
Correct answer: A
Rationale: The correct answer is A: Hyponatremia. Hyponatremia, characterized by low sodium levels in the blood, can lead to cerebral edema and seizures due to water shifting into brain cells. Hypercalcemia (choice B) does not commonly cause seizures but can result in muscle weakness and cardiac arrhythmias. Hyperkalemia (choice C) may lead to muscle weakness and cardiac arrhythmias, but it is less frequently associated with seizures. Hypokalemia (choice D) is linked to muscle weakness and cardiac arrhythmias but is not typically related to seizures.
2. At what age does a 9-year-old child typically lose which of the following teeth?
- A. Central incisor
- B. Second molar
- C. Lateral incisor
- D. Cuspid
Correct answer: A
Rationale: A 9-year-old child typically loses their central incisors, not the lateral incisors or second molars. The central incisors are usually among the first teeth that children lose around 6 to 7 years of age, as part of the natural process of shedding primary teeth to make way for permanent teeth. The second molars and cuspids are typically lost later in the mixed dentition phase. Therefore, option A, 'Central incisor,' is the correct answer.
3. A client is post-operative day two from an abdominal surgery and reports feeling weak and lightheaded when attempting to get out of bed. What is the nurse's priority action?
- A. Encourage the client to drink fluids.
- B. Assist the client back to bed and monitor vital signs.
- C. Administer a prescribed antiemetic.
- D. Notify the healthcare provider.
Correct answer: B
Rationale: The nurse's priority action should be to assist the client back to bed and monitor vital signs. The client's symptoms of feeling weak and lightheaded could indicate potential issues like hypotension or dehydration, which need to be assessed promptly. Encouraging fluids (Choice A) could be beneficial but is not the immediate priority. Administering an antiemetic (Choice C) may not address the underlying cause of the client's symptoms. Notifying the healthcare provider (Choice D) can be done after the client has been stabilized and assessed.
4. According to the principle of asepsis, which situation should the PN consider to be sterile?
- A. A one-inch border around the edges of a sterile field set up in the operating room
- B. A sterile glove that the PN thinks might have touched hair
- C. A wrapped, unopened sterile 4x4 gauze pad placed on a damp table top
- D. An open sterile Foley catheter kit set up on a table at the PN's waist level
Correct answer: A
Rationale: According to the principle of asepsis, the one-inch border around the edges of a sterile field set up in the operating room is considered non-sterile, while the central area remains sterile. Therefore, the PN should consider the situation described in choice A to be sterile. Choice B is incorrect because a glove that may have touched hair is contaminated. Choice C is incorrect as a sterile item placed on a damp surface is considered contaminated. Choice D is incorrect as a sterile kit set up at the PN's waist level is prone to contamination.
5. What is the function of the epiglottis during swallowing?
- A. Prevents food from entering the trachea
- B. Aids in food propulsion
- C. Enhances taste sensation
- D. Lubricates the esophagus
Correct answer: A
Rationale: The epiglottis is a flap of tissue that closes over the trachea during swallowing to prevent food and liquids from entering the airway. Choice A is correct because the primary function of the epiglottis is to act as a lid over the trachea, ensuring that food goes down the esophagus and not into the windpipe. Choices B, C, and D are incorrect as they do not describe the specific role of the epiglottis during swallowing.
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