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 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.
3. 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.
4. The debilitated patient is resisting attempts by the nurse to provide oral hygiene. Which action will the nurse take next?
- A. Insert an oral airway.
- B. Place the patient in a flat, supine position.
- C. Use undiluted hydrogen peroxide as a cleaner.
- D. Quickly proceed without talking to the patient.
Correct answer: A
Rationale: When a debilitated patient resists oral hygiene, the nurse should prioritize safety. Inserting an oral airway helps keep the mouth open, ensuring adequate access for oral care procedures while preventing any accidental biting or closure of the airway. Placing the patient in a flat, supine position may not address the resistance issue and can lead to aspiration risk. Using undiluted hydrogen peroxide is not recommended due to its potential harmful effects on oral tissues. Proceeding quickly without communication can escalate the situation and compromise patient-centered care.
5. The healthcare provider prescribes morphine sulfate 4mg IM STAT. Morphine comes in 8 mg per ml. How many ml should the LPN/LVN administer?
- A. 0.5 ml
- B. 1 ml
- C. 1.5 ml
- D. 2 ml
Correct answer: A
Rationale: To administer 4 mg of morphine, as prescribed, the LPN/LVN needs to calculate the correct volume based on the concentration provided (8 mg per ml). Since the desired dose is 4 mg, half of 8 mg (0.5 ml) is required to administer the correct amount. Therefore, the correct answer is 0.5 ml. Choices B, C, and D are incorrect as they would either underdose or overdose the patient.
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