HESI LPN
HESI Fundamentals Exam
1. A client requires gastric decompression, and a nurse is inserting an NG tube. Which action should the nurse take to verify proper placement of the tube?
- A. Assess the client for a gag reflex
- B. Measure the pH of the gastric aspirate
- C. Place the end of the NG tube in water to observe for bubbling
- D. Auscultate 2.5 cm (1 in) above the umbilicus while injecting 15 mL of sterile water
Correct answer: B
Rationale: Measuring the pH of the gastric aspirate is the most reliable method to confirm proper placement of an NG tube. Gastric fluid has an acidic pH, typically ranging from 1 to 5. Assessing the client for a gag reflex (choice A) is important for airway protection but does not confirm tube placement. Placing the NG tube in water to observe for bubbling (choice C) is incorrect and not a reliable method for verifying placement. Auscultating 2.5 cm above the umbilicus while injecting sterile water (choice D) is an outdated method and is not recommended for verifying NG tube placement.
2. 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.
3. When assessing a client's IV for infiltration, which finding would be unexpected for the nurse?
- A. The area around the infusion site feels warm to the touch.
- B. The infusion site is swollen and cool to the touch.
- C. The infusion line does not flush properly.
- D. There is no blood return in the infusion line.
Correct answer: A
Rationale: The correct answer is A. Warmth around the infusion site is not an expected finding with infiltration. Infiltration typically presents with swelling and coolness due to the fluid leaking into the surrounding tissue. Choices B, C, and D are incorrect because swelling, coolness, and difficulty flushing the line, as well as lack of blood return, are commonly associated with infiltration.
4. A nurse has noticed several occasions in the past week when another nurse on the unit seemed drowsy and unable to focus on the issue at hand. Today, the nurse was found asleep in a chair in the break room not during a break time. Which of the following actions should the nurse take?
- A. Alert the American Nurses Association.
- B. Fill out an incident report.
- C. Report the observations to the nurse manager on the unit.
- D. Leave the nurse alone to sleep.
Correct answer: C
Rationale: Reporting the observations to the nurse manager is the appropriate action to ensure the safety of the clients and address potential impairment. The nurse manager can take necessary steps to assess the situation and intervene if needed. Alerting the American Nurses Association (Choice A) is not necessary at this stage as the immediate concern is the safety of clients in the unit. Filling out an incident report (Choice B) may be required later, but the priority is to address the issue promptly by involving the immediate supervisor. Leaving the nurse alone to sleep (Choice D) is not a safe option as it does not address the underlying problem of potential impairment and safety concerns; it is essential to address the issue promptly to ensure patient safety.
5. The nurse assesses a client who has a nasal cannula delivering oxygen at 2 L/min. To assess for skin damage related to the cannula, which areas should the nurse observe?
- A. Tops of the ears
- B. Bridge of the nose
- C. Around the nostrils
- D. Over the cheeks
Correct answer: A
Rationale: When a client is using a nasal cannula for oxygen therapy, the areas prone to skin damage are the tops of the ears and around the nostrils. The pressure exerted by the cannula on these areas can lead to skin breakdown, so it is important for the nurse to observe these sites for any signs of damage. The correct answer is 'Tops of the ears.' Choices 'Bridge of the nose' and 'Over the cheeks' are not typically areas where skin damage related to the cannula would occur, making them incorrect choices.
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