HESI LPN
HESI Fundamentals Exam
1. The healthcare professional prepares a 1,000 ml IV of 5% dextrose and water to be infused over 8 hours. The infusion set delivers 10 drops per milliliter. The healthcare professional should regulate the IV to administer approximately how many drops per minute?
- A. 80
- B. 8
- C. 21
- D. 25
Correct answer: C
Rationale: To calculate the drops per minute for the IV infusion, first determine the total drops to be infused over 8 hours. 1,000 ml to be infused over 8 hours means 125 ml per hour (1000 ml / 8 hours = 125 ml/hr). Since the infusion set delivers 10 drops per ml, 125 ml/hr x 10 drops/ml = 1250 drops/hr. To find drops per minute, divide the drops per hour by 60 (minutes in an hour): 1250 drops/hr / 60 minutes = 20.83 drops/minute, which rounds up to 21 drops per minute (Option C). This rate ensures the correct infusion rate over 8 hours. Choices A, B, and D are incorrect calculations and do not provide the appropriate infusion rate needed to administer the IV over the specified time period.
2. A client who is lactating is being taught about taking medications by a nurse. Which of the following actions should the nurse recommend to minimize the entry of medication into breast milk?
- A. Drink 8 oz of water with each dose of medication.
- B. Use medications that have a short half-life.
- C. Take each dose right after breastfeeding.
- D. Pump breast milk and discard it prior to feeding the newborn.
Correct answer: C
Rationale: Taking medications immediately after breastfeeding helps minimize the amount of medication that enters breast milk. By doing so, there is a longer interval between the medication intake and the next breastfeeding session, reducing the concentration of the medication in breast milk. Options A and B are incorrect as drinking water with medication or using medications with a short half-life do not directly minimize the entry of medication into breast milk. Option D is unnecessary and wasteful as pumping and discarding breast milk before feeding is not as effective as timing medication intake with breastfeeding to reduce medication transfer into breast milk.
3. A client has a new prescription for parenteral nutrition (PN) in 20% dextrose and fat emulsions. Which of the following is an appropriate action to include in the plan of care?
- A. Monitor blood glucose levels daily.
- B. Change the PN infusion bag every 24 hours.
- C. Prepare the client for a central venous line.
- D. Administer the PN and fat emulsion together.
Correct answer: C
Rationale: When a client requires parenteral nutrition (PN) with a high dextrose concentration, such as 20%, it typically has a high osmolarity. High osmolarity solutions should be infused through a central venous line to prevent peripheral vein irritation and potential complications. Therefore, preparing the client for a central venous line is essential for the safe administration of PN with high dextrose. Monitoring blood glucose levels daily is important but not directly related to the need for a central venous line. Changing the PN infusion bag every 24 hours helps prevent bacterial contamination, but it is not the most critical action in this scenario. Administering the PN and fat emulsion together or separately is a matter of compatibility and administration guidelines, but it is not the key concern in this situation.
4. Upon completing the admission documents, the nurse learns that the 87-year-old client does not have an advance directive. What action should the nurse take?
- A. Record the lack of advance directive on the chart
- B. Give information about advance directives
- C. Assume that the client wishes a full code
- D. Refer this issue to the unit secretary
Correct answer: B
Rationale: The correct action for the nurse to take is to give information about advance directives to the client. By providing this information, the nurse empowers the client to make an informed decision about their care preferences. Choice A is incorrect because simply recording the lack of advance directive does not address the client's need for information. Choice C is incorrect because assuming the client wishes a full code without discussing it with them is not appropriate and may not align with the client's wishes. Choice D is incorrect as the nurse should directly address the issue with the client rather than involving another staff member.
5. The healthcare professional is assessing a client who is post-operative following abdominal surgery. Which assessment finding would require immediate intervention?
- A. Absent bowel sounds
- B. Pain level of 8/10
- C. Temperature of 100.4°F
- D. Saturated abdominal dressing
Correct answer: D
Rationale: A saturated abdominal dressing may indicate active bleeding or other complications that require immediate intervention. This finding suggests a potential surgical site issue that needs urgent attention to prevent further complications. Absent bowel sounds, pain level, and a slightly elevated temperature are common post-operative findings that may not necessarily require immediate intervention compared to a saturated abdominal dressing. Absent bowel sounds can be common after surgery due to anesthesia but may resolve with time. Pain and slightly elevated temperature are expected post-operative findings that can be managed with appropriate pain relief and monitoring. However, a saturated abdominal dressing indicates a potential ongoing issue at the surgical site that needs prompt assessment and intervention to prevent complications.
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