HESI LPN
Practice HESI Fundamentals Exam
1. A client with a history of hypertension is prescribed a diuretic. Which of the following laboratory values should the nurse monitor to evaluate the effectiveness of the medication?
- A. Monitor serum calcium levels.
- B. Monitor serum potassium levels.
- C. Monitor serum sodium levels.
- D. Monitor serum magnesium levels.
Correct answer: B
Rationale: The correct answer is to monitor serum potassium levels. When a client is prescribed a diuretic, monitoring serum potassium levels is essential to evaluate the medication's effectiveness and to detect potential electrolyte imbalances. Diuretics can cause potassium loss, leading to hypokalemia, which can have serious consequences such as cardiac arrhythmias. Monitoring serum calcium levels (Choice A) is not typically required when assessing the effectiveness of diuretics. Similarly, monitoring serum sodium levels (Choice C) is important for other conditions but is not the primary concern when evaluating diuretic therapy. Monitoring serum magnesium levels (Choice D) is also important, but potassium levels are more critical in assessing diuretic effectiveness and preventing complications.
2. A client is being taught how to care for their tracheostomy at home. Which of the following instructions should the nurse include in the teaching?
- A. Use tracheostomy covers when outdoors.
- B. Clean the tracheostomy site with hydrogen peroxide daily.
- C. Change the tracheostomy tube weekly.
- D. Apply ointment around the tracheostomy site.
Correct answer: A
Rationale: The correct instruction is to use tracheostomy covers when outdoors. Tracheostomy covers serve to protect the airway from environmental contaminants, reducing the risk of infection. Choice B is incorrect because hydrogen peroxide can be irritating to the skin and is not recommended for cleaning the tracheostomy site. Choice C is incorrect as tracheostomy tubes should not be routinely changed weekly unless there is a specific medical indication. Changing it without a need can introduce infection or damage the stoma. Choice D is incorrect as applying ointment around the tracheostomy site can lead to occlusion of the stoma and interfere with breathing.
3. The healthcare provider is reviewing the signed operative consent with a client who is admitted for the removal of a lipoma on the left leg. The client states that the permit should include...
- A. Notify the surgeon of the client’s concern
- B. Have the client sign a new surgical permit
- C. Add the client’s concern to the permit
- D. Inform the surgeon about the client’s concern
Correct answer: D
Rationale: In this scenario, the best course of action is to inform the surgeon about the client's concern. This action ensures that the surgeon is aware of the client's specific request or concern related to the procedure. By directly involving the surgeon, the client's preferences or needs can be addressed effectively, potentially avoiding any misunderstanding or dissatisfaction. Choice A has been corrected to 'Notify the surgeon of the client’s concern' as the operating room staff may not have the authority to make changes to the permit. Having the client sign a new surgical permit (Choice B) may not be necessary if the concern can be addressed by informing the surgeon, making Choice B less efficient. Adding the client’s concern to the permit (Choice C) without consulting the surgeon may not align with the standard procedure and could lead to confusion or legal issues if the surgeon is not aware of the client’s specific requests.
4. A client with chronic kidney disease is being assessed. Which of the following laboratory values would be most concerning?
- A. Serum creatinine of 3.0 mg/dL
- B. Serum potassium of 6.5 mEq/L
- C. Blood urea nitrogen (BUN) of 45 mg/dL
- D. Hemoglobin of 10 g/dL
Correct answer: B
Rationale: In a client with chronic kidney disease, elevated serum potassium levels (hyperkalemia) are the most concerning finding. Hyperkalemia can lead to life-threatening cardiac dysrhythmias. Monitoring and managing serum potassium levels are crucial in patients with kidney disease to prevent severe complications. While elevated creatinine (Choice A) and BUN (Choice C) are indicative of impaired kidney function, hyperkalemia poses a more immediate threat to the client's health. Hemoglobin levels (Choice D) can be affected by chronic kidney disease but are not as acutely dangerous as severe hyperkalemia.
5. A nurse is reviewing evidence-based practice principles about the administration of oxygen therapy with a newly licensed nurse. Which of the following actions should the nurse include?
- A. Regulate oxygen via nasal cannula at a flow rate no more than 6 L/min
- B. Administer oxygen at a higher flow rate for better saturation
- C. Use a high-flow nasal cannula for all clients
- D. Adjust oxygen flow based on client comfort
Correct answer: A
Rationale: The correct answer is A. Regulating oxygen flow at no more than 6 L/min via nasal cannula is a safe practice to prevent potential complications such as oxygen toxicity. Option B suggesting administering oxygen at a higher flow rate for better saturation is incorrect as it can lead to adverse effects. Option C is incorrect because using a high-flow nasal cannula for all clients is not necessary and should be based on individual client needs. Option D is incorrect as adjusting oxygen flow solely based on client comfort without considering the prescribed flow rate can compromise the effectiveness of oxygen therapy.
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