HESI LPN
Fundamentals of Nursing HESI
1. Heparin 20,000 units in 500 ml D5W at 50 ml/hour has been infusing for 5.5 hours. How much heparin has the client received?
- A. 11,000 units.
- B. 13,000 units.
- C. 15,000 units.
- D. 17,000 units.
Correct answer: A
Rationale: To calculate the total amount of heparin received, multiply the infusion rate (50 ml/hour) by the total infusion time (5.5 hours). This results in 275 ml of the solution infused. Since there are 20,000 units of heparin in 500 ml, there are 800 units per ml. Therefore, 275 ml contains 220,000 units. However, the heparin is diluted in 500 ml, so the client has received half of this amount, which is 110,000 units. Therefore, the correct answer is 11,000 units. Choices B, C, and D are incorrect as they do not reflect the correct calculation based on the provided information.
2. How should a healthcare provider handle a child with a suspected head injury who is showing signs of drowsiness?
- A. Administer pain medication
- B. Perform a full neurological assessment
- C. Allow the child to sleep
- D. Contact a specialist immediately
Correct answer: B
Rationale: When a child with a suspected head injury is showing signs of drowsiness, administering pain medication should not be the first course of action as it may mask important symptoms. Allowing the child to sleep is not recommended as they need to be monitored. Contacting a specialist immediately may delay necessary assessments. Performing a full neurological assessment is the most appropriate action because it helps evaluate the head injury's extent, identify neurological deficits, and guide further intervention or treatment.
3. Which of the following pairs share 100% of their genes?
- A. Biovular twins
- B. Fraternal twins
- C. Dizygotic (DZ) twins
- D. Monozygotic (MZ) twins
Correct answer: D
Rationale: The correct answer is Monozygotic (MZ) twins. Monozygotic twins, also known as identical twins, share 100% of their genes because they originate from the same fertilized egg that splits into two. Fraternal twins (choice B), also known as dizygotic (DZ) twins (choice C), result from two separate fertilized eggs and share approximately 50% of their genes. Biovular twins (choice A) is not a term used in genetics and does not describe a type of twinning.
4. Which action should the nurse implement first for a client experiencing alcohol withdrawal?
- A. Apply vest or extremity restraints.
- B. Give an alpha-adrenergic blocker.
- C. Provide a diet high in protein and calories.
- D. Prepare the environment to prevent self-injury.
Correct answer: D
Rationale: The correct action for the nurse to implement first for a client experiencing alcohol withdrawal is to prepare the environment to prevent self-injury. Clients undergoing alcohol withdrawal are at risk of seizures and other symptoms that may lead to self-harm. By ensuring a safe environment, the nurse can mitigate the risk of injury. Applying restraints (Choice A) should only be considered if less restrictive measures fail, as restraints can agitate the client further. Giving an alpha-adrenergic blocker (Choice B) may be part of the treatment plan for alcohol withdrawal but is not the first action to take. Providing a diet high in protein and calories (Choice C) is important for overall health but is not the priority when addressing immediate safety concerns.
5. A 3-month-old infant has been hospitalized with respiratory syncytial virus (RSV). What is the priority intervention?
- A. Administering an antiviral agent
- B. Clustering care to conserve energy
- C. Offering oral fluids to promote hydration
- D. Providing an antitussive agent when necessary
Correct answer: B
Rationale: The priority intervention for a 3-month-old infant hospitalized with respiratory syncytial virus (RSV) is clustering care to conserve energy. Infants with RSV often struggle to breathe and require rest periods to recover. Clustering care involves organizing nursing activities to allow for rest intervals, reducing the infant's energy expenditure and aiding recovery. Administering antiviral agents is not the primary intervention for RSV since it is a viral infection, and antiviral medications may not be effective against RSV. While offering oral fluids is crucial for hydration, it may not be the priority when the infant is having respiratory difficulties. Providing an antitussive agent when necessary can help with coughing but is not the priority intervention for managing RSV in this scenario.