HESI LPN
HESI Fundamentals Exam Test Bank
1. What is the most important action for preventing infection in a client with a central venous catheter?
- A. Changing the catheter dressing every 72 hours.
- B. Flushing the catheter with heparin solution daily.
- C. Ensuring the catheter is clamped when not in use.
- D. Maintaining sterile technique when handling the catheter.
Correct answer: D
Rationale: Maintaining sterile technique when handling a central venous catheter is crucial in preventing infections. This action helps minimize the introduction of pathogens into the catheter site, reducing the risk of contamination and subsequent infection. Changing the catheter dressing every 72 hours, while important, does not directly address the prevention of infection at the insertion site. Flushing the catheter with heparin solution daily helps prevent occlusion but does not primarily focus on infection prevention. Ensuring the catheter is clamped when not in use is essential for preventing air embolism but does not directly relate to infection control.
2. The healthcare professional prepares a 1,000 ml IV of 5% dextrose and water to be infused over 8 hours. The infusion set delivers 10 drops per milliliter. The healthcare professional should regulate the IV to administer approximately how many drops per minute?
- A. 80
- B. 8
- C. 21
- D. 25
Correct answer: C
Rationale: To calculate the drops per minute for the IV infusion, first determine the total drops to be infused over 8 hours. 1,000 ml to be infused over 8 hours means 125 ml per hour (1000 ml / 8 hours = 125 ml/hr). Since the infusion set delivers 10 drops per ml, 125 ml/hr x 10 drops/ml = 1250 drops/hr. To find drops per minute, divide the drops per hour by 60 (minutes in an hour): 1250 drops/hr / 60 minutes = 20.83 drops/minute, which rounds up to 21 drops per minute (Option C). This rate ensures the correct infusion rate over 8 hours. Choices A, B, and D are incorrect calculations and do not provide the appropriate infusion rate needed to administer the IV over the specified time period.
3. A hospitalized male client is receiving nasogastric tube feedings via a small-bore tube and a continuous pump infusion. He reports that he had a bad bout of severe coughing a few minutes ago but feels fine now. What action is best for the LPN/LVN to take?
- A. Record the coughing incident. No further action is required at this time.
- B. Stop the feeding, explain to the family why it is being stopped, and notify the healthcare provider.
- C. After clearing the tube with 30 ml of air, check the pH of fluid withdrawn from the tube.
- D. Inject 30 ml of air into the tube while auscultating the epigastrium for gurgling.
Correct answer: C
Rationale: After a client experiences severe coughing following nasogastric tube feedings, it is crucial to verify proper tube placement. Checking the pH of fluid withdrawn from the tube helps confirm the tube's correct positioning. Option A is incorrect because further action is necessary to ensure the client's safety. Option B is inappropriate as it suggests stopping the feeding without assessing the tube's placement. Option D is incorrect as injecting air into the tube may lead to further complications if the tube is not positioned correctly.
4. A nurse is caring for an older adult client who is confused and continually grabs at the nurse. Which of the following is a nursing action?
- A. Firmly tell the client not to grab
- B. Redirect the client’s attention
- C. Use physical restraints
- D. Avoid contact with the client
Correct answer: B
Rationale: Redirecting the client's attention is the appropriate nursing action in this scenario. When dealing with a confused client exhibiting grabbing behavior, redirection can help shift their focus to a more appropriate activity or object. Firmly telling the client not to grab may escalate the situation and create a confrontational environment, which is not recommended when caring for confused clients. The use of physical restraints should be a last resort and only implemented after all other strategies have been exhausted, as they can contribute to increased agitation and distress in older adults. Avoiding contact with the client is not a proactive approach to managing the behavior and may lead to feelings of neglect or abandonment in the client.
5. During a peripheral vascular assessment, a healthcare professional places the bell of the stethoscope on a client's neck and hears an audible vascular sound associated with turbulent blood flow. This sound indicates which of the following?
- A. Narrowed arterial lumen
- B. Distended jugular veins
- C. Impaired ventricular contraction
- D. Asynchronous closure of the aortic and pulmonic valve
Correct answer: A
Rationale: The correct answer is A: Narrowed arterial lumen. Arterial bruits are abnormal sounds caused by turbulent blood flow through narrowed or occluded arteries. This turbulent flow creates a blowing sound, which is heard as an arterial bruit. Distended jugular veins (choice B) are typically associated with venous issues, not arterial abnormalities. Impaired ventricular contraction (choice C) and asynchronous closure of the aortic and pulmonic valve (choice D) are not directly related to the audible vascular sound described in the scenario.
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