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?
- A. 13 ml/hour
- B. 63 ml/hour
- C. 80 ml/hour
- D. 125 ml/hour
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. The nurse manager is reviewing medication documentation. Which of the following statements should the nurse plan to include in teaching?
- A. Use the complete name of the medication magnesium sulfate.
- B. Avoid abbreviating medication names to prevent errors.
- C. Use generic names only for medications.
- D. Document the dosage, route of administration, and complete medication name.
Correct answer: A
Rationale: The correct answer is A: 'Use the complete name of the medication magnesium sulfate.' When documenting medications, it is crucial to use the complete name to avoid confusion and errors. Abbreviating medication names (choice B) can lead to misinterpretation and errors in medication administration. Using generic names only for medications (choice C) may not provide enough specificity, leading to potential medication errors. While documenting the dosage and route of administration is important, it is also vital to include the complete medication name (choice D) for accurate record-keeping and to ensure clarity in medication administration.
3. During an assessment, a client receiving tube feedings via NG tube shows signs of nasal mucosa irritation. What finding should the nurse report to the provider?
- A. Potassium 5.5 mEq/L
- B. Irritation of nasal mucosa
- C. Sodium 144 mEq/L
- D. Loose stools
Correct answer: B
Rationale: Irritation of nasal mucosa is a crucial finding that the nurse should report to the provider as it suggests potential complications with NG tube placement, such as improper positioning or mucosal damage. High potassium levels (Choice A) can be concerning but are not directly related to NG tube placement issues. Normal sodium levels (Choice C) and loose stools (Choice D) are common occurrences in clients receiving tube feedings and are not typically indicative of immediate complications that require urgent reporting.
4. Heparin 20,000 units in 500 ml D5W at 50 ml/hour has been infusing for 5.5 hours. How much heparin has the client received?
- A. 11,000 units.
- B. 13,000 units.
- C. 15,000 units.
- D. 17,000 units.
Correct answer: A
Rationale: To calculate the total amount of heparin received, multiply the infusion rate (50 ml/hour) by the total infusion time (5.5 hours). This results in 275 ml of the solution infused. Since there are 20,000 units of heparin in 500 ml, there are 800 units per ml. Therefore, 275 ml contains 220,000 units. However, the heparin is diluted in 500 ml, so the client has received half of this amount, which is 110,000 units. Therefore, the correct answer is 11,000 units. Choices B, C, and D are incorrect as they do not reflect the correct calculation based on the provided information.
5. The nurse is teaching an elderly client how to use MDIs (multi-dose inhalers). The nurse is concerned that the client is unable to coordinate the release of the medication with the inhalation phase. What is the nurse's best recommendation to improve the delivery of the medication?
- A. Nebulized treatments for home care
- B. Adding a spacer device to the MDI canister
- C. Asking a family member to assist the client with the MDI
- D. Requesting a visiting nurse to follow the client at home
Correct answer: B
Rationale: Adding a spacer device to the MDI canister is the best recommendation in this scenario. The spacer device helps to improve coordination and medication delivery by allowing the client more time to inhale the medication effectively. Nebulized treatments for home care (Choice A) involve a different delivery method and are not directly related to improving coordination with MDIs. Asking a family member to assist (Choice C) may not address the core issue of coordination between releasing the medication and inhalation. Requesting a visiting nurse (Choice D) may not be necessary if the client can improve coordination with the spacer device.
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