HESI LPN
HESI Fundamentals Practice Questions
1. The client is being taught how to use a peak flow meter. The nurse explains that this device should be used to:
- A. Determine oxygen saturation
- B. Measure forced expiratory volume
- C. Monitor the atmosphere for the presence of allergens
- D. Provide metered doses for inhaled bronchodilator
Correct answer: B
Rationale: A peak flow meter is used to measure forced expiratory volume, which helps in monitoring asthma. This measurement provides valuable information about how well the client's lungs are functioning and how narrow their airways are. Choice A is incorrect because determining oxygen saturation is typically done using a pulse oximeter. Choice C is incorrect as a peak flow meter is not used to monitor the atmosphere for allergens but rather to assess lung function. Choice D is incorrect as providing metered doses for inhaled bronchodilators is the function of a metered-dose inhaler, not a peak flow meter.
2. 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.
3. A home health nurse is teaching a new caregiver how to care for a client who has had a tracheostomy for 1 year. Which of the following instructions should the nurse include?
- A. Use tracheostomy covers when going outdoors.
- B. Maintain sterile technique when performing tracheostomy care.
- C. Do not remove the outer cannula for routine cleaning.
- D. Clean around the stoma with normal saline.
Correct answer: A
Rationale: The correct answer is to use tracheostomy covers when going outdoors. This instruction is important as it helps protect the airway from dust and other particles, reducing the risk of infection or irritation. Choice B is incorrect because maintaining sterile technique is crucial during tracheostomy care to prevent infections, but it is not the most pertinent instruction in this scenario. Choice C is incorrect as removing the outer cannula is not a routine cleaning procedure and should only be done by healthcare professionals when necessary. Choice D is incorrect because cleaning around the stoma with normal saline is not recommended as it can cause irritation to the skin and stoma site.
4. A client is being treated for diabetic ketoacidosis (DKA). Which laboratory value would be most concerning?
- A. Blood glucose of 350 mg/dL
- B. Serum bicarbonate of 18 mEq/L
- C. Arterial pH of 7.20
- D. Serum potassium of 5.5 mEq/L
Correct answer: C
Rationale: In a client with diabetic ketoacidosis (DKA), the most concerning laboratory value is an arterial pH of 7.20. An arterial pH of 7.20 indicates severe acidosis, which is a critical condition requiring immediate intervention. This pH level reflects a significant imbalance in the body's acid-base status, potentially leading to serious complications. High blood glucose levels (choice A) are expected in DKA but do not directly indicate the severity of acidosis. A serum bicarbonate level of 18 mEq/L (choice B) is low but not as immediately critical as a pH of 7.20. Serum potassium of 5.5 mEq/L (choice D) is elevated, which can occur in DKA due to insulin deficiency, but it is not the most concerning value in this scenario.
5. A nurse is providing teaching to an older adult client who has constipation. Which of the following statements should the nurse include in the teaching?
- A. Sit on the toilet 30 minutes after eating a meal.
- B. Increase your fluid intake to help with bowel movements.
- C. Exercise regularly to improve bowel function.
- D. Consume more high-fiber foods to prevent constipation.
Correct answer: A
Rationale: The correct statement the nurse should include in the teaching is to 'Sit on the toilet 30 minutes after eating a meal.' This advice can help establish a regular bowel routine and improve bowel movement. Option B, 'Increase your fluid intake to help with bowel movements,' while important, is not specific to the time after eating and does not directly address the need for establishing a routine. Option C, 'Exercise regularly to improve bowel function,' is also important but does not address the timing of bowel movements. Option D, 'Consume more high-fiber foods to prevent constipation,' is beneficial for preventing constipation but does not address the timing aspect related to bowel movements.
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