HESI LPN
HESI Practice Test for Fundamentals
1. A client with congestive heart failure (CHF) is receiving furosemide (Lasix). Which laboratory value should the LPN monitor closely while the client is taking this medication?
- A. Sodium
- B. Potassium
- C. Calcium
- D. Magnesium
Correct answer: B
Rationale: The LPN should monitor potassium levels closely while the client is taking furosemide (Lasix) due to the medication's potential to cause hypokalemia. Furosemide is a loop diuretic that can lead to potassium loss through increased urine output. Hypokalemia can result in serious complications such as cardiac dysrhythmias. Monitoring sodium levels (choice A) is important but not as critical as monitoring potassium in this context. Calcium (choice C) and magnesium (choice D) levels are not typically affected by furosemide and are not the priority for monitoring in this scenario.
2. A client is being taught how to use an incentive spirometer. Which of the following statements by the client indicates an understanding of the teaching?
- A. I will try to seal my lips around the mouthpiece
- B. I will use the spirometer as needed throughout the day
- C. I will inhale slowly and deeply when using the spirometer
- D. I will seal my lips around the mouthpiece
Correct answer: D
Rationale: The correct answer is D. Sealing the lips around the mouthpiece is crucial for the proper use of an incentive spirometer as it helps ensure effective delivery of the inhaled medication. Choice A has been corrected to reflect the importance of sealing the lips. Choices B and C are incorrect because using the spirometer as needed throughout the day and inhaling slowly and deeply, although beneficial, do not directly address the essential technique of sealing the lips around the mouthpiece.
3. A client has acute renal failure. Which of the following assessments provides the most accurate measure of the client's fluid status?
- A. Daily weight
- B. Intake and output
- C. Urine specific gravity
- D. Peripheral edema
Correct answer: A
Rationale: Daily weight is the most accurate measure of fluid status in a client with acute renal failure. Fluctuations in weight reflect changes in body fluid volume, including both fluid retention or loss. Intake and output, while important, may not always accurately reflect overall fluid status as it does not account for insensible losses. Urine specific gravity can provide information on urine concentration but does not offer a comprehensive assessment of overall fluid status. Peripheral edema, although a sign of fluid retention, is a more subjective assessment and may not always accurately reflect the client's fluid status like daily weight monitoring does.
4. A client who is unstable and requires frequent vital signs has an electronic blood pressure machine automatically measuring his blood pressure every 15 min. However, the machine is reading the client’s blood pressure at more frequent intervals, and the readings are not similar. The nurse checks the machine settings and observes the additional readings, but the problem continues. Which of the following is the appropriate nursing action?
- A. Notify the manufacturer
- B. Disconnect the machine, and measure the blood pressure manually every 15 min
- C. Adjust the machine settings again
- D. Ignore the extra readings
Correct answer: B
Rationale: The correct action in this scenario is to disconnect the electronic blood pressure machine and measure the client's blood pressure manually every 15 minutes. Given that the machine is malfunctioning and providing inconsistent readings, relying on manual measurements ensures accuracy and maintains the quality of care. Notifying the manufacturer (Choice A) may be necessary in the long run, but the immediate concern is the accuracy of the vital signs. Adjusting the machine settings again (Choice C) without resolving the underlying issue would not address the problem. Ignoring the extra readings (Choice D) could lead to incorrect assessment and compromise patient care. Therefore, the best course of action is to disconnect the machine and opt for manual blood pressure measurements until the issue is resolved.
5. A post-op nurse has an indwelling catheter in place for gravity drainage. The nurse notes that the client's urine bag has been empty for 2 hours. The first action the nurse should take is to:
- A. Check to see if the tubing is kinked.
- B. Increase the IV fluid rate.
- C. Check the catheter insertion site.
- D. Contact the healthcare provider.
Correct answer: A
Rationale: The correct action for the nurse to take when the urine bag has not filled for 2 hours is to check if the tubing is kinked. Kinks in the tubing can obstruct the flow of urine from the catheter, leading to decreased drainage. Increasing the IV fluid rate is not the appropriate initial action in this situation as the primary concern is with the catheter drainage. Checking the catheter insertion site would be secondary to ensuring proper drainage. Contacting the healthcare provider is not necessary as the issue can often be resolved by checking for simple tubing obstructions first.
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