HESI LPN
HESI Fundamentals Exam Test Bank
1. A nurse is preparing an infusion for a client who was hospitalized with deep-vein thrombosis. The orders read: 25,000 units of heparin in 250 mL of 0.9% sodium chloride to infuse at 800 units/hr. At what rate should the nurse set the infusion pump?
- A. 8 mL/hr
- B. 10 mL/hr
- C. 12 mL/hr
- D. 15 mL/hr
Correct answer: A
Rationale: To calculate the infusion rate, use the formula: (Desired units/hr / Total units) × Volume. In this case, it would be (800 units/hr / 25,000 units) × 250 mL = 8 mL/hr. Therefore, the nurse should set the infusion pump at 8 mL/hr. Choice B, 10 mL/hr, is incorrect because it does not match the calculated rate. Choices C and D, 12 mL/hr and 15 mL/hr respectively, are also incorrect as they do not align with the correct calculation based on the provided data.
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 Cleansing the site with hydrogen peroxide is outdated as it can cause tissue damage and delay wound healing.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 admitting a client with an abdominal wound, which precaution should be taken?
- A. Contact precautions
- B. Droplet precautions
- C. Airborne precautions
- D. Standard precautions
Correct answer: A
Rationale: When admitting a client with an abdominal wound, contact precautions should be implemented. Contact precautions are used to prevent the spread of infections that are spread by direct or indirect contact. In the case of abdominal wounds, bacteria and pathogens can easily be transmitted through contact with the wound or wound drainage. Droplet precautions are used for infections transmitted through respiratory droplets, such as influenza. Airborne precautions are used for infections spread through the air, like tuberculosis. Standard precautions are used for all clients to prevent the spread of infections and should be followed in addition to specific precautions based on the type of infection.
4. A nurse on a medical-surgical unit is caring for a group of clients. For which of the following clients should the nurse expect a prescription for fluid restriction?
- A. A client who has a new diagnosis of adrenal insufficiency
- B. A client who has heart failure
- C. A client who is receiving treatment for diabetic ketoacidosis
- D. A client who has abdominal ascites
Correct answer: B
Rationale: The correct answer is B. Fluid restriction is commonly prescribed for clients with heart failure to prevent fluid overload and exacerbation of heart failure symptoms. Heart failure often leads to fluid retention, and restricting fluid intake can help manage this condition. Adrenal insufficiency, diabetic ketoacidosis, and abdominal ascites do not typically require fluid restriction as a primary intervention. Adrenal insufficiency may require hormone replacement therapy, diabetic ketoacidosis requires fluid and electrolyte replacement, and abdominal ascites may require diuretics or paracentesis to remove excess fluid.
5. A guardian reports that a 4-year-old child is waking up with nightmares. Which of the following interventions should the nurse suggest?
- A. Offer the child a large snack before bedtime.
- B. Allow the child to watch an extra 30 minutes of TV in the evening.
- C. Have the child go to bed at a consistent time every day.
- D. Increase physical activity before bedtime.
Correct answer: C
Rationale: The correct answer is to have the child go to bed at a consistent time every day. Consistent bedtime routines can help reduce nightmares by providing the child with a sense of security and stability. Offering a large snack before bedtime or allowing extra TV time may disrupt sleep patterns and lead to nightmares. Increasing physical activity before bedtime could have the opposite effect and make it harder for the child to fall asleep.
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