HESI LPN
HESI Fundamentals Study Guide
1. When reviewing a client’s fluid and electrolyte status, what should the nurse report to the provider?
- A. Potassium 5.4
- B. Sodium 140
- C. Calcium 8.6
- D. Magnesium 2.0
Correct answer: A
Rationale: The correct answer is A: 'Potassium 5.4'. A potassium level of 5.4 is elevated (normal range is typically 3.5-5.0 mEq/L) and may indicate hyperkalemia, which can have serious cardiac implications. Elevated potassium levels can lead to life-threatening arrhythmias, so immediate reporting and intervention are necessary. Choice B, 'Sodium 140', falls within the normal range (135-145 mEq/L) and does not require immediate reporting. Choice C, 'Calcium 8.6', falls within the normal range (8.5-10.5 mg/dL) and is not an immediate concern. Choice D, 'Magnesium 2.0', is within the normal range (1.5-2.5 mEq/L) and does not need urgent reporting. Therefore, the nurse should prioritize reporting the elevated potassium level as it poses the most immediate risk.
2. The patient has been in bed for several days and needs to be ambulated. Which action will the nurse take first?
- A. Maintain a narrow base of support.
- B. Dangle the patient at the bedside.
- C. Encourage isometric exercises.
- D. Suggest a high-calcium diet.
Correct answer: B
Rationale: The correct action the nurse should take first when a patient needs to be mobilized after being in bed for several days is to dangle the patient at the bedside. Dangling at the bedside is the initial step to assess the patient's tolerance to sitting up and moving. It helps prevent orthostatic hypotension and allows the nurse to evaluate the patient's response to upright positioning before attempting further ambulation. Maintaining a narrow base of support (Choice A) is related to assisting with ambulation but is not the first step. Encouraging isometric exercises (Choice C) and suggesting a high-calcium diet (Choice D) are not immediate actions needed to initiate mobilization in this scenario.
3. What is the rate of delivery in mL/hr if a total volume of 750 mL is infused over a period of 7 hours?
- A. 107 mL/hr.
- B. 107 mL/hr.
- C. 107 mL/hr.
- D. 107 mL/hr.
Correct answer: A
Rationale: The correct rate of delivery is 107 mL/hr. To find the rate of delivery, divide the total volume by the total time: 750 mL / 7 hours = 107 mL/hr. Choice B, C, and D are incorrect as they do not match the correct calculation based on the total volume and time provided.
4. A nurse in an outpatient surgical center is admitting a client for a laparoscopic procedure. The client has a prescription for preoperative diazepam. Prior to administering the medication, which of the following actions is the nurse’s priority?
- A. Teaching the client about the purpose of the medication
- B. Giving the medication at the administration time the provider prescribed
- C. Identifying the client’s medication allergies
- D. Documenting the client’s anxiety level
Correct answer: C
Rationale: The correct answer is C: Identifying the client's medication allergies. This is the priority action before administering any medication to prevent allergic reactions or adverse effects. Teaching the client about the medication's purpose is important for client understanding but not as critical as ensuring the absence of allergies. While giving medication at the prescribed time is crucial, verifying allergies takes precedence to ensure patient safety. Documenting the client's anxiety level is relevant for holistic care but is not the priority compared to ensuring safe medication administration.
5. The LPN observes an unlicensed assistive personnel (UAP) taking a client's blood pressure with a cuff that is too small, but the blood pressure reading obtained is within the client's usual range. What action is most important for the nurse to implement?
- A. Tell the UAP to use a larger cuff at the next scheduled assessment.
- B. Reassess the client's blood pressure using a larger cuff.
- C. Have the unit educator review this procedure with the UAPs.
- D. Teach the UAP the correct technique for assessing blood pressure.
Correct answer: B
Rationale: Reassessing the client's blood pressure using a larger cuff is the most important action for the nurse to implement in this situation. Using the correct cuff size is crucial for obtaining accurate blood pressure readings. By reassessing with a larger cuff, the nurse can ensure an accurate measurement and proper monitoring of the client's blood pressure. Choice A is not the best option as it doesn't address the immediate need for accurate blood pressure measurement. Choice C is not the most appropriate action at this time since the immediate concern is ensuring correct blood pressure assessment. Choice D, while important, is not the most critical step in this scenario where immediate reassessment is needed with the correct cuff size.
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