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 with a history of asthma is experiencing shortness of breath. What is the most appropriate action for the LPN/LVN to take first?
- A. Administer a bronchodilator as prescribed.
- B. Encourage the client to practice deep breathing exercises.
- C. Position the client in high Fowler's position.
- D. Obtain a peak flow reading.
Correct answer: A
Rationale: Administering a bronchodilator as prescribed is the most appropriate initial action for managing asthma-related shortness of breath. Bronchodilators help to open up the airways quickly, providing relief for the client. Encouraging deep breathing exercises may be beneficial in some situations but should not be the first action for acute shortness of breath in asthma. Positioning the client in high Fowler's position can also help improve breathing, but administering the bronchodilator takes precedence. Obtaining a peak flow reading is important in asthma management, but it is not the initial action needed to address acute shortness of breath.
3. A client is being discharged with a prescription for digoxin (Lanoxin). Which of the following instructions should the nurse include in the discharge teaching?
- A. Take your pulse daily before taking this medication.
- B. Take an extra dose if you miss a dose of this medication.
- C. Take this medication with food.
- D. Avoid eating foods high in potassium while taking this medication.
Correct answer: A
Rationale: The correct answer is A: 'Take your pulse daily before taking this medication.' It is essential for clients taking digoxin to monitor their pulse daily to detect bradycardia, a potential side effect. Choice B is incorrect because clients should never take an extra dose if a dose is missed; they should take the missed dose as soon as remembered unless it is close to the time for the next dose. Choice C is incorrect because digoxin is preferably taken with food to minimize gastrointestinal side effects. Choice D is incorrect because digoxin itself can cause low potassium levels, so avoiding potassium-rich foods is not necessary.
4. When obtaining a urine specimen for a culture and sensitivity from an indwelling catheter, the nurse should:
- A. Cleanse the entry port prior to withdrawing urine.
- B. Use a sterile syringe to collect urine from the collection bag.
- C. Obtain the specimen from the drainage tubing.
- D. Replace the catheter before obtaining the specimen.
Correct answer: A
Rationale: The correct procedure when obtaining a urine specimen from an indwelling catheter for culture and sensitivity is to cleanse the entry port before withdrawing urine. This step helps reduce the risk of contamination and ensures the accuracy of the results. Option B is incorrect because using a sterile syringe to collect urine from the collection bag is not the recommended method for obtaining a catheter specimen. Option C is incorrect as obtaining the specimen from the drainage tubing is not the appropriate technique for collecting a urine sample from an indwelling catheter. Option D is incorrect because replacing the catheter before obtaining the specimen is not necessary and may introduce unnecessary complications.
5. A client has left lower atelectasis. In which of the following positions should the nurse place the client for postural drainage?
- A. Supine and low Fowler's position
- B. Right lateral in Trendelenburg position
- C. Side lying with the right side of the chest elevated
- D. Prone with pillows under the extremities
Correct answer: B
Rationale: Postural drainage is a technique used to help remove secretions from specific lung segments. For left lower atelectasis, placing the client in the right lateral Trendelenburg position is most effective. This position helps target the affected area, using gravity to assist in drainage. Placing the client in a supine or low Fowler's position (Choice A) may not effectively target the affected area. Side lying with the right side of the chest elevated (Choice C) would not utilize gravity for optimal drainage. Placing the client prone with pillows under the extremities (Choice D) is not ideal for postural drainage of the left lower lobe.
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