HESI LPN
HESI Fundamentals Exam
1. A healthcare professional is planning to collect a liquid stool specimen from a client for ova and parasites. Inaccurate test results may result if the healthcare professional:
- A. Refrigerates the collected specimen
- B. Collects the specimen in a sterile container
- C. Delays the collection of the specimen
- D. Uses a non-contaminated collection container
Correct answer: A
Rationale: Refrigeration can kill the ova and parasites present in the stool specimen, leading to inaccurate test results. Storing the specimen in a cold environment can disrupt the integrity of the parasites and ova, affecting the accuracy of the test. Collecting the specimen in a sterile container (Choice B) is the correct procedure to prevent external contamination. Delaying the collection of the specimen (Choice C) may affect the freshness of the sample but does not directly impact the test results. Using a non-contaminated collection container (Choice D) is essential to maintain the sample's integrity but does not relate to the risk of killing ova and parasites through refrigeration.
2. A healthcare professional is caring for a client who has pharyngeal diphtheria. Which of the following types of transmission precautions should the healthcare professional initiate?
- A. Contact
- B. Droplet
- C. Airborne
- D. Protective
Correct answer: B
Rationale: The correct answer is B: Droplet. Droplet precautions are required for infections that spread via droplets larger than 5 microns in diameter, such as pharyngeal diphtheria. Contact precautions are used for diseases that spread by direct or indirect contact. Airborne precautions are for diseases that spread through small particles in the air. Protective precautions are not a standard precautionary measure for specific infections like pharyngeal diphtheria.
3. The healthcare provider is caring for a 17-month-old with acetaminophen poisoning. Which lab reports should the healthcare provider review first?
- A. Prothrombin time (PT) and partial thromboplastin time (PTT)
- B. Red blood cell and white blood cell counts
- C. Blood urea nitrogen and creatinine levels
- D. Liver enzymes (AST and ALT)
Correct answer: D
Rationale: In acetaminophen poisoning, liver damage is a significant concern due to the toxic effects of the drug on the liver. Liver enzymes such as AST (aspartate aminotransferase) and ALT (alanine aminotransferase) are essential markers to assess liver function and damage. Monitoring these enzymes early is crucial to detect hepatotoxicity and guide further management. Prothrombin time and partial thromboplastin time are coagulation studies and are not the priority in acetaminophen poisoning. Red and white blood cell counts are not specific to assess liver damage in this context. Blood urea nitrogen and creatinine levels are primarily used to evaluate kidney function, which is not the primary concern in acetaminophen poisoning.
4. A mother tells the nurse that her 2-year-old toddler has temper tantrums and says 'no' every time the mother tries to help them get dressed. The nurse should recognize the toddler is manifesting which of the following stages of development?
- A. Trying to increase independence.
- B. Developing a sense of trust.
- C. Establishing a new identity.
- D. Attempting to master a skill.
Correct answer: A
Rationale: The correct answer is A: Trying to increase independence. Toddlers around the age of 2 often exhibit behaviors like temper tantrums and saying 'no' as they are asserting their independence and autonomy. This behavior is a normal part of their developmental stage where they are starting to explore and assert their own preferences and desires. Choice B, developing a sense of trust, is more relevant to infants during the trust vs. mistrust stage. Choice C, establishing a new identity, is typically associated with adolescence and identity formation. Choice D, attempting to master a skill, is more indicative of a child trying to learn and develop new abilities rather than the behavior described in the scenario.
5. An occupational health nurse is caring for an employee who was exposed to an unknown dry chemical, resulting in a chemical burn. Which of the following interventions should the nurse include in the plan of care?
- A. Irrigate the affected area with running water.
- B. Wash the affected area with antibacterial soap.
- C. Brush the chemical off the skin and clothing.
- D. Leave the clothing in place until emergency personnel arrive.
Correct answer: C
Rationale: The correct intervention for an employee exposed to an unknown dry chemical is to brush off the chemical from the skin and clothing. This helps prevent further skin contact before irrigation can be done. Irrigating the affected area with running water is crucial after brushing off the chemical to minimize the exposure. Washing the affected area with antibacterial soap is not appropriate for chemical burns, as soap can react with certain chemicals and worsen the situation. Leaving the clothing in place until emergency personnel arrive may allow the chemical to continue to harm the skin and should be avoided.
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