HESI LPN
HESI Fundamental Practice Exam
1. 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.
2. A healthcare provider is preparing to insert an IV catheter into a client's arm before starting IV fluid therapy. Which of the following interventions should the provider implement to prevent infection?
- A. Thread the IV catheter so that the hub rests at the insertion site
- B. Shave excess hair from around the insertion site
- C. Cleanse the site with hydrogen peroxide before IV catheter insertion
- D. Palpate the site carefully just before inserting the IV catheter
Correct answer: A
Rationale: Inserting the IV catheter so that the hub rests at the insertion site reduces the risk of contamination along the length of the catheter. This technique helps prevent introducing microbes into the bloodstream during the catheter insertion process. Shaving excess hair is unnecessary and can increase the risk of skin irritation and infection. Cleansing the site with hydrogen peroxide is outdated as it can cause tissue damage and delay wound healing. Palpating the site just before insertion can introduce bacteria from the skin surface into the insertion site, increasing the risk of infection.
3. When preparing an injection for opioid medication, a nurse draws 1mL from a 2mL vial. What should the nurse do next?
- A. Ask another nurse to observe medication wastage
- B. Document the amount of medication drawn on the MAR
- C. Dispose of the remaining medication in a sharps container
- D. Administer the entire vial of medication to avoid wastage
Correct answer: A
Rationale: When drawing medication from a vial, especially for controlled substances like opioids, any wastage must be witnessed by another healthcare professional to ensure accuracy, prevent diversion, and maintain safety standards. This process is crucial for proper documentation and accountability. Recording the amount drawn on the Medication Administration Record (MAR) is important for tracking administered doses and preventing errors. Disposing of the remaining medication in a sharps container is not recommended as it does not address proper wastage documentation. Administering the entire vial of medication just to avoid wastage is inappropriate and can lead to potential harm or overdose in the patient.
4. The caregiver is teaching parents about accidental poisoning in children. Which point should be emphasized?
- A. Call the Poison Control Center as soon as the situation is identified
- B. Empty the child's mouth in any case of possible poisoning
- C. Have the child move minimally if a toxic substance was inhaled
- D. Do not induce vomiting if the poison is a hydrocarbon
Correct answer: B
Rationale: The correct answer is to emphasize emptying the child's mouth in any case of possible poisoning. This action is crucial to prevent further ingestion of the poisonous substance. Choice A is incorrect because calling the Poison Control Center should be one of the first steps, not waiting until the situation is identified. Choice C is incorrect as moving the child may spread or exacerbate the effects of the toxic substance. Choice D is incorrect because inducing vomiting can be harmful if the poison is a hydrocarbon, as it may lead to aspiration.
5. A nurse educator is conducting a parenting class for new guardians of infants. Which of the following statements made by a participant indicated understanding?
- A. “I will set my water heater at 130°F.”
- B. “Once my baby can sit up, they should be safe in the bathtub.”
- C. “I will place my baby on their stomach to sleep.”
- D. “Once my infant starts to push up, I will remove the mobile from over the crib.”
Correct answer: D
Rationale: The correct answer is D. Removing the mobile when the baby starts to push up prevents choking hazards as infants can reach and grab objects posing a risk of choking. Choice A is unsafe as setting the water heater at 130°F can scald a child. Choice B is incorrect because even when a baby can sit up, they still require close supervision in the bathtub. Choice C is unsafe as current guidelines recommend placing babies on their backs to sleep to reduce the risk of sudden infant death syndrome (SIDS). Therefore, choices A, B, and C are incorrect or unsafe practices for infant care.
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