HESI LPN
HESI Fundamental Practice Exam
1. A healthcare professional is admitting a client who has tuberculosis. Which of the following types of transmission precautions should the healthcare professional plan to initiate?
- A. Contact
- B. Droplet
- C. Airborne
- D. Protective environment
Correct answer: C
Rationale: Tuberculosis is transmitted through airborne particles, so airborne precautions are necessary to prevent the spread of the disease. Airborne precautions (Choice C) involve measures such as negative pressure rooms and N95 respirators to prevent the transmission of infectious agents that remain infectious over long distances when suspended in the air. Contact precautions (Choice A) are used for diseases that spread through direct contact with the patient or their environment. Droplet precautions (Choice B) are for diseases transmitted through respiratory droplets, typically over short distances. Protective environment (Choice D) is used for clients who are immunocompromised to protect them from environmental pathogens, not for diseases like tuberculosis that spread through the air.
2. 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.
3. A client is lying on the bathroom floor after a nurse responds to a call light. Which of the following actions should the nurse take first?
- A. Check the client for injuries
- B. Move hazardous objects away from the client
- C. Notify the provider
- D. Ask the client to describe how she felt prior to the fall
Correct answer: A
Rationale: The nurse's priority in this situation is to assess the client for injuries. Checking for injuries first is crucial to determine the extent of harm caused by the fall and to provide immediate care. Moving hazardous objects can wait until the client's safety is ensured. Notifying the provider and asking the client about how she felt prior to the fall are important but are secondary to assessing for injuries in this urgent scenario. It is essential to address immediate physical needs before investigating the cause of the fall or notifying other healthcare team members.
4. A client with a history of seizures is prescribed phenytoin (Dilantin). Which statement should the LPN/LVN include when teaching the client about this medication?
- A. Do not take the medication with milk to avoid reduced absorption.
- B. Brush and floss your teeth regularly to prevent gum disease.
- C. Avoid taking antacids within 2 hours of the medication.
- D. Report any unusual bleeding or bruising to the healthcare provider.
Correct answer: C
Rationale: The correct answer is to avoid taking antacids within 2 hours of phenytoin. Antacids can interfere with the absorption of phenytoin, reducing its effectiveness. Choice A is incorrect because phenytoin should not be taken with milk, as it may decrease its absorption. Choice B is unrelated to the medication and focuses on dental hygiene. Choice D is important but not directly related to phenytoin; it is more relevant to monitoring for adverse effects of the medication.
5. A client is receiving a blood transfusion. The client reports flank pain, and the nurse notes reddish-brown urine in the client's urinary catheter bag. The nurse recognizes these manifestations as which of the following types of transfusion reactions?
- A. Hemolytic
- B. Allergic
- C. Febrile
- D. Transfusion-related acute lung injury (TRALI)
Correct answer: A
Rationale: The correct answer is A: Hemolytic. Hemolytic reactions can lead to flank pain and hemoglobinuria, as the body breaks down the transfused red blood cells. In hemolytic reactions, the immune system attacks and destroys the transfused red blood cells, causing the release of hemoglobin into the bloodstream and urine. This results in reddish-brown urine, indicating hemoglobinuria. Allergic reactions typically present with symptoms like itching, hives, or rash. Febrile reactions are characterized by fever, chills, and rigors. TRALI is a rare but serious transfusion reaction that manifests as acute respiratory distress following a transfusion, not flank pain and hemoglobinuria.
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