HESI LPN
HESI Fundamentals Exam Test Bank
1. A nurse is preparing an infusion for a client who was hospitalized with deep-vein thrombosis. The orders read: 25,000 units of heparin in 250 mL of 0.9% sodium chloride to infuse at 800 units/hr. At what rate should the nurse set the infusion pump?
- A. 8 mL/hr
- B. 10 mL/hr
- C. 12 mL/hr
- D. 15 mL/hr
Correct answer: A
Rationale: To calculate the infusion rate, use the formula: (Desired units/hr / Total units) × Volume. In this case, it would be (800 units/hr / 25,000 units) × 250 mL = 8 mL/hr. Therefore, the nurse should set the infusion pump at 8 mL/hr. Choice B, 10 mL/hr, is incorrect because it does not match the calculated rate. Choices C and D, 12 mL/hr and 15 mL/hr respectively, are also incorrect as they do not align with the correct calculation based on the provided data.
2. A client is postoperative following knee arthroplasty and requires the use of a thigh-length sequential compression device. Which of the following actions should the nurse take?
- A. Ensure two fingers can fit under the sleeves.
- B. Ensure the device is not too tight to impede circulation.
- C. Position the client comfortably before applying the device.
- D. Use the device continuously to prevent blood clots.
Correct answer: A
Rationale: The correct action for the nurse to take when applying a thigh-length sequential compression device to a postoperative client is to ensure that two fingers can fit under the sleeves. This action helps prevent the device from being too tight, which could impede circulation. Choice B is incorrect because the device should not be too tight, as it could lead to circulation issues. Choice C is incorrect as the client should be in a comfortable position, not necessarily supine. Choice D is incorrect as sequential compression devices are typically used continuously to prevent blood clots.
3. What is the most important action for preventing infection in a client with a central venous catheter?
- A. Changing the catheter dressing every 72 hours.
- B. Flushing the catheter with heparin solution daily.
- C. Ensuring the catheter is clamped when not in use.
- D. Maintaining sterile technique when handling the catheter.
Correct answer: D
Rationale: Maintaining sterile technique when handling a central venous catheter is crucial in preventing infections. This action helps minimize the introduction of pathogens into the catheter site, reducing the risk of contamination and subsequent infection. Changing the catheter dressing every 72 hours, while important, does not directly address the prevention of infection at the insertion site. Flushing the catheter with heparin solution daily helps prevent occlusion but does not primarily focus on infection prevention. Ensuring the catheter is clamped when not in use is essential for preventing air embolism but does not directly relate to infection control.
4. The nurse is providing discharge instructions to a client who has been prescribed an iron supplement. Which statement by the client indicates a need for further teaching?
- A. I should take the supplement with milk to increase absorption.
- B. I should expect my stools to turn black while taking this supplement.
- C. I should take the supplement with a full glass of water.
- D. I should take the supplement on an empty stomach.
Correct answer: A
Rationale: Taking an iron supplement with milk can decrease its absorption, indicating a need for further teaching.
5. A healthcare provider is monitoring a client for adverse effects following the administration of an opioid. Which of the following effects should the provider identify as an adverse effect of opioids?
- A. Urinary incontinence
- B. Diarrhea
- C. Bradypnea
- D. Orthostatic hypotension
Correct answer: D
Rationale: The correct answer is D: Orthostatic hypotension. Opioids can cause orthostatic hypotension, leading to a sudden drop in blood pressure when changing positions. This effect is due to the vasodilatory properties of opioids, which can result in decreased blood flow to the brain upon standing up. Choices A, B, and C are incorrect. Urinary incontinence and diarrhea are not typical adverse effects of opioids. Bradypnea, or slow breathing, is a potential side effect of opioid overdose or respiratory depression, but it is not a common adverse effect following normal opioid administration.
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