a client is to receive 10 meq of kcl diluted in 250 ml of normal saline over 4 hours at what rate should the lpnlvn set the clients intravenous infusi
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HESI LPN

HESI Fundamental Practice Exam

1. A client is to receive 10 mEq of KCl diluted in 250 ml of normal saline over 4 hours. At what rate should the LPN/LVN set the client's intravenous infusion pump?

Correct answer: B

Rationale: To calculate the correct rate of infusion, divide the total volume by the total time: 250 ml / 4 hours = 62.5 ml/hour, which is rounded up to 63 ml/hour. This rate ensures the proper administration of the KCl over the 4-hour period. Choice A (13 ml/hour) is incorrect as it does not match the calculated rate. Choices C (80 ml/hour) and D (125 ml/hour) are also incorrect as they do not correspond to the calculated rate needed for the specified time frame.

2. After abdominal surgery, a client has not urinated since the urinary catheter was removed 8 hours ago. What action should the LPN take first?

Correct answer: A

Rationale: Performing a bladder scan is the initial step to assess for urinary retention in a postoperative client. This non-invasive technique helps determine the volume of urine in the bladder, guiding further interventions. Encouraging the client to drink fluids (Choice B) may be beneficial but is not the priority when assessing for urinary retention. Inserting a straight catheter (Choice C) should not be the initial action without first assessing for retention. Administering a diuretic (Choice D) should not be done without confirming the need through assessment.

3. A client with a history of falls is under the care of a nurse. Which of the following actions should be the nurse’s priority?

Correct answer: C

Rationale: The nurse's priority should be to eliminate safety hazards from the client's environment as it directly reduces the risk of falls. Addressing environmental hazards is an immediate and crucial step in preventing falls. While completing a fall-risk assessment is important to understand the client's risk factors, educating the client and family about fall risks is essential for prevention, and ensuring the use of assistive aids is crucial for safety, eliminating safety hazards takes precedence as it directly mitigates the risk of falls.

4. A nurse is preparing to administer an injection of an opioid medication to a client. The nurse draws out 1 mL of the medication from a 2 mL vial. Which of the following actions should the nurse take?

Correct answer: A

Rationale: In medication wastage situations involving controlled substances, it is crucial to have a second nurse observe and verify the disposal process. This practice ensures accountability and prevents any mishandling or diversion of the medication. Choice B is incorrect because notifying the pharmacy is not the immediate action required in this scenario. Choice C is incorrect as locking the remaining medication in the controlled substance cabinet without proper witnessing does not ensure accountability. Choice D is incorrect as disposing of the vial with the remaining medication in a sharps container does not address the need for a witness to verify the wastage of the controlled substance.

5. The healthcare provider prescribes 1,000 ml of Ringer's Lactate with 30 Units of Pitocin to run over 4 hours for a client who has just delivered a 10-pound infant by cesarean section. The tubing has been changed to a 20 gtt/ml administration set. The LPN/LVN plans to set the flow rate at how many gtt/min?

Correct answer: B

Rationale: To calculate the flow rate in drops per minute (gtt/min), the formula is Total volume (mL) ÷ Time (min) ÷ Drop factor (gtt/mL). In this case, 1000 mL ÷ 240 min ÷ 20 gtt/mL = 83 gtt/min. Therefore, setting the flow rate to 83 gtt/min ensures the correct administration of the IV fluids and medication. Choices A, C, and D are incorrect as they do not align with the correct calculation based on the provided information.

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