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. What action should be taken to maintain the patency of a peripherally inserted central catheter (PICC)?
- A. Flush the catheter with heparin solution daily.
- B. Change the dressing at the insertion site daily.
- C. Use sterile technique when changing the dressing.
- D. Keep the insertion site dry at all times.
Correct answer: C
Rationale: The correct answer is to use sterile technique when changing the dressing. This practice is essential for preventing infections that can compromise the patency of the PICC line. While flushing the catheter with heparin solution helps prevent clot formation, it does not directly maintain patency. Changing the dressing daily is important for hygiene but does not have a direct impact on catheter patency. Keeping the insertion site dry is crucial to prevent infections but does not specifically address patency maintenance.
3. What is the first step a healthcare professional should take when preparing to provide tracheostomy care?
- A. Perform hand hygiene
- B. Gather equipment
- C. Explain the procedure
- D. Assess the client
Correct answer: A
Rationale: Performing hand hygiene is the initial step a healthcare professional should take when preparing to provide tracheostomy care. This step is crucial to prevent the transmission of pathogens and reduce the risk of infection to the client. By cleansing the hands, the healthcare professional ensures patient safety. While gathering equipment, explaining the procedure, and assessing the client are essential components of tracheostomy care, they should occur after performing hand hygiene to maintain aseptic technique and minimize the risk of introducing harmful microorganisms to the client.
4. A client with a history of chronic obstructive pulmonary disease (COPD) is being discharged with home oxygen therapy. Which statement by the client indicates a need for further teaching?
- A. I will keep my oxygen tank upright at all times.
- B. I will not use petroleum jelly to keep my nose from drying out.
- C. I will not smoke or allow others to smoke around me.
- D. I will call my doctor if I have difficulty breathing.
Correct answer: B
Rationale: The correct answer is B. Petroleum jelly is flammable and should not be used with oxygen therapy as it can increase the risk of fire. Using petroleum jelly near oxygen can lead to a fire hazard. Choices A, C, and D are correct statements that indicate proper understanding of oxygen therapy safety measures. Choice A emphasizes the importance of keeping the oxygen tank upright to prevent leaks, choice C highlights the necessity of avoiding smoking to prevent exacerbation of COPD, and choice D encourages seeking medical help promptly in case of breathing difficulties.
5. A healthcare professional is preparing to insert an NG tube for a client admitted with bowel obstruction. Which of the following should the healthcare professional do first?
- A. Explain the procedure to the client
- B. Measure the length of the NG tube
- C. Lubricate the NG tube
- D. Place the client in a high Fowler’s position
Correct answer: A
Rationale: Explaining the procedure to the client is the initial and most important step that the healthcare professional should take before inserting an NG tube. By explaining the procedure, the healthcare professional ensures the client's understanding, obtains informed consent, and fosters cooperation. Measuring the length of the NG tube, lubricating the tube, and positioning the client in a high Fowler's position are essential steps in the NG tube insertion process but should come after the client has been informed and consented to the procedure.
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