HESI LPN
HESI Fundamentals Study Guide
1. A client is being discharged home with oxygen therapy via a nasal cannula. Which of the following instructions should the nurse provide to the client and family?
- A. Wear cotton clothing to avoid static electricity.
- B. Avoid using any electrical appliances.
- C. Keep the oxygen tank away from heat sources.
- D. Use only a specific type of nasal cannula.
Correct answer: A
Rationale: The correct answer is A: Wear cotton clothing to avoid static electricity. When using oxygen therapy, static electricity can pose a hazard as it increases the risk of fire. Cotton clothing helps reduce static electricity buildup. Choice B, avoiding electrical appliances, is overly restrictive and not entirely necessary. Choice C, keeping the oxygen tank away from heat sources, is important to prevent fire hazards but is not directly related to the nasal cannula. Choice D, using only a specific type of nasal cannula, is not a universal guideline and limits flexibility in care.
2. 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.
3. The healthcare provider is assessing a client with suspected tuberculosis. Which symptom would be most concerning?
- A. Night sweats
- B. Weight loss
- C. Cough with bloody sputum
- D. Fatigue
Correct answer: C
Rationale: Cough with bloody sputum is a hallmark symptom of tuberculosis and is highly concerning as it indicates active disease. Hemoptysis (coughing up blood) is associated with tuberculosis infection in the lungs. While night sweats and weight loss are common symptoms of tuberculosis, they are less specific than coughing with bloody sputum. Fatigue is a nonspecific symptom that can be present in various conditions and is not specific to tuberculosis.
4. When providing hygiene for an older-adult patient, why does the nurse closely assess the skin?
- A. Outer skin layer becomes less resilient.
- B. Less frequent bathing may be required.
- C. Skin becomes more subject to bruising.
- D. Sweat glands become less active.
Correct answer: B
Rationale: The correct answer is B: 'Less frequent bathing may be required.' In older adults, daily bathing or using hot water and harsh soap can lead to excessively dry skin. Therefore, the nurse closely assesses the skin to determine if less frequent bathing is necessary to prevent skin dryness and maintain skin integrity. Choice A is incorrect because the outer skin layer does not become less resilient with age. Choice C is incorrect as aging skin is actually more prone to bruising due to thinning of the skin. Choice D is incorrect because sweat gland activity generally decreases with age, leading to reduced skin moisture rather than increased activity.
5. A nurse is preparing to insert an IV catheter for an adult client. Which of the following actions should the nurse take?
- A. Choose the most distal site on the selected extremity
- B. Apply a cool compress to the selected extremity before insertion of the IV catheter
- C. Stroke the selected extremity before insertion of the IV catheter
- D. Place the tourniquet above the proposed insertion site
Correct answer: C
Rationale: When preparing to insert an IV catheter, stroking the extremity before insertion helps to visualize veins, making it easier to locate a suitable vein for catheter insertion. Choosing the most distal site on the extremity is correct because veins more distal are preferred for IV catheter insertion. Applying a cool compress to the extremity before insertion is unnecessary and not a standard practice. Placing the tourniquet below the proposed insertion site is incorrect; the tourniquet should be placed above the proposed insertion site to help engorge the veins for easier visualization and access.
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