HESI LPN
Fundamentals of Nursing HESI
1. 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.
2. A child weighing 20 kg has a new prescription for cefoxitin at 80 mg/kg/day administered intravenously every 6 hours. How much cefoxitin should be administered with each dose?
- A. 400 mg
- B. 200 mg
- C. 1600 mg
- D. 100 mg
Correct answer: A
Rationale: To determine the amount of cefoxitin to be administered with each dose, first, calculate the total daily dose by multiplying the child's weight (20 kg) by the prescribed dose (80 mg/kg/day): 80 mg/kg/day × 20 kg = 1600 mg/day. Since the medication is administered every 6 hours (4 doses/day), divide the total daily dose by the number of doses: 1600 mg / 4 = 400 mg. Therefore, each dose should be 400 mg. Choice B (200 mg) is incorrect because it is half the calculated dose. Choice C (1600 mg) is incorrect as it represents the total daily dose, not the dose per administration. Choice D (100 mg) is incorrect as it is a quarter of the calculated dose.
3. A healthcare provider is preparing to perform mouth care for an unresponsive client. Which of the following actions should the healthcare provider plan to take?
- A. Raise the level of the bed
- B. Administer mouth care with the client in a supine position
- C. Use a tongue depressor to open the mouth
- D. Place the client in a prone position
Correct answer: A
Rationale: Raising the bed level is the correct action to facilitate easier access for mouth care in an unresponsive client. This position enhances the safety and comfort of both the client and the healthcare provider. Administering mouth care with the client in a supine position (lying flat on their back) can increase the risk of aspiration. Using a tongue depressor to open the mouth is not recommended as it can cause discomfort and potential injury. Placing the client in a prone position (lying face down) is contraindicated for mouth care and can compromise the client's airway.
4. A healthcare provider is receiving a prescription for a client who is experiencing dysphagia following a stroke. Which of the following prescriptions should the healthcare provider clarify?
- A. Dietitian consult
- B. Speech therapy referral
- C. Oral suction at the bedside
- D. Clear liquids
Correct answer: D
Rationale: The correct answer is D: 'Clear liquids.' Clients with dysphagia following a stroke are at high risk of aspiration, and clear liquids have a higher risk of aspiration compared to thickened liquids. Therefore, the healthcare provider should clarify the prescription for clear liquids and consider recommending thickened liquids instead to reduce the risk of aspiration. Choice A, 'Dietitian consult,' is essential to ensure the client receives appropriate nutrition tailored to their condition. Choice B, 'Speech therapy referral,' is crucial for dysphagia management and rehabilitation. Choice C, 'Oral suction at the bedside,' is a standard intervention to maintain airway patency and is not contraindicated in clients with dysphagia.
5. When performing cardiac chest compressions, what is a critical concept that the nurse must understand?
- A. Push hard and deep on the chest
- B. Compress the chest at a rapid rate
- C. Perform compressions with minimal interruptions
- D. Use a two-handed technique for compressions
Correct answer: A
Rationale: The correct answer is to 'Push hard and deep on the chest.' Effective chest compressions during CPR should be forceful and deep enough to adequately circulate blood to vital organs. This helps maintain perfusion and increases the likelihood of a successful outcome. Compressing the chest at a rapid rate (choice B) is important but not as critical as ensuring the compressions are hard and deep. Performing compressions with minimal interruptions (choice C) is also crucial to maintain blood flow. Using a two-handed technique for compressions (choice D) may be helpful but is not as critical as the depth and force of the compressions.
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