HESI LPN
HESI Fundamentals Exam Test Bank
1. 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.
2. The healthcare professional is preparing to administer potassium chloride intravenously to a client with hypokalemia. Which action is most important?
- A. Monitor the client's respiratory rate
- B. Check the client's urine output
- C. Administer the potassium chloride as a rapid IV push
- D. Dilute the potassium chloride in an appropriate IV solution
Correct answer: D
Rationale: The correct answer is to dilute the potassium chloride in an appropriate IV solution. Potassium chloride should never be administered as a rapid IV push as it can lead to severe complications, including cardiac arrhythmias. Diluting the medication and administering it slowly helps reduce the risk of adverse effects. Monitoring the client's respiratory rate (Choice A) and checking urine output (Choice B) are important aspects of patient assessment but not the most crucial when administering potassium chloride. Administering potassium chloride as a rapid IV push (Choice C) is dangerous and can result in serious harm to the client.
3. A nurse on a medical-surgical unit is washing her hands prior to assisting with a surgical procedure. Which of the following actions by the nurse demonstrates proper surgical hand-washing techniques?
- A. The nurse washes with her hands held higher than her elbows.
- B. The nurse uses a brush to scrub under her nails.
- C. The nurse washes for at least 30 seconds.
- D. The nurse uses alcohol-based hand rub only.
Correct answer: A
Rationale: Proper surgical hand-washing technique involves keeping the hands higher than the elbows to prevent contamination. Washing with hands held lower than the elbows can lead to potential contamination. Using a brush to scrub under the nails is not recommended as it can cause microabrasions, increasing infection risk. While washing for at least 30 seconds is a good practice for thorough hand hygiene, hand positioning is critical during surgical hand-washing. Using alcohol-based hand rub alone is insufficient for surgical hand-washing as it may not effectively remove dirt, debris, and transient microorganisms.
4. A nurse in a provider's office is obtaining the health and medication history of a client who has a respiratory infection. The client tells the nurse that she is not aware of any allergies, but that she did develop a rash the last time she was taking an antibiotic. Which of the following information should the nurse give the client?
- A. "Rashes are very common, especially if you have dry skin. Did it go away on its own?"
- B. "Virtually all medications have adverse effects. It sounds like this could have been an adverse effect of the antibiotic."
- C. "It's unlikely that your doctor will prescribe an antibiotic for what seems to be a minor viral infection, so we shouldn't be concerned about that rash."
- D. "We need to document the exact medication you were taking because you might be allergic to it."
Correct answer: D
Rationale: The correct answer is D. If a client reports developing a rash when taking a specific medication, even if they are not aware of any allergies, it is crucial to document this information. This is necessary to prevent future allergic reactions. Identifying the exact medication that caused the rash is essential as the client could have an allergy to it. Providing this information allows healthcare providers to avoid prescribing the same medication again, which could potentially lead to more severe allergic reactions or life-threatening situations. Choices A, B, and C are incorrect because they do not address the importance of documenting the specific medication that caused the adverse reaction or the potential risks of repeating the medication. Simply attributing the rash to common occurrences, adverse effects of medications in general, or assuming the rash is insignificant in the current context can overlook the critical aspect of identifying and avoiding allergens.
5. 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.
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