HESI LPN
Medical Surgical HESI 2023
1. A client is receiving a secondary infusion of erythromycin 1 gram in 100 mL dextrose 5% in water (D5W) to be infused in 45 minutes. How many mL/hour should the nurse program the infusion pump?
- A. 100 mL/hour.
- B. 125 mL/hour.
- C. 133 mL/hour.
- D. 150 mL/hour.
Correct answer: C
Rationale: To infuse 100 mL in 45 minutes, the infusion rate should be set to 133 mL/hour (100 mL / 0.75 hours). This calculation is obtained by dividing the total volume to be infused by the total time for infusion (100 mL / 0.75 hours = 133 mL/hour). Therefore, choice C is the correct answer. Choices A, B, and D are incorrect because they do not accurately calculate the infusion rate required to deliver the medication within the specified time frame.
2. Based on the interpretation of this strip, what action should be implemented first?
- A. Call a code.
- B. Start CPR.
- C. Administer IV fluids.
- D. Apply oxygen.
Correct answer: A
Rationale: The correct answer is A: 'Call a code.' In the context of ventricular fibrillation (V-Fib), immediate defibrillation is crucial. Calling a code is the first step to activating the emergency response team, including individuals trained to provide defibrillation. Starting CPR (Choice B) may be necessary but should follow defibrillation. Administering IV fluids (Choice C) and applying oxygen (Choice D) are important interventions in cardiac arrest cases, but in V-Fib, the priority is defibrillation to restore normal heart rhythm.
3. The nurse determines that an adult client who is admitted to the post-anesthesia care unit (PACU) following abdominal surgery has a tympanic temperature of 94.6°F (34.4°C), a pulse rate of 88 beats/minute, a respiratory rate of 14 breaths/minute, and a blood pressure of 94/68 mmHg. Which action should the nurse implement?
- A. Check the BP every five minutes for one hour.
- B. Raise the HOB 60 to 90 degrees.
- C. Ask the client to cough and deep breathe.
- D. Take the client’s temperature using another method.
Correct answer: D
Rationale: Taking the temperature using another method is essential in this situation to verify if the low reading is accurate and requires further intervention. The tympanic temperature of 94.6°F may be inaccurate due to various factors such as improper technique or environmental conditions. Checking the blood pressure every five minutes for one hour (Choice A) is not the priority in this case as the low blood pressure reading alone does not necessitate such frequent monitoring. Raising the head of the bed 60 to 90 degrees (Choice B) is not directly related to addressing the low temperature and blood pressure. Asking the client to cough and deep breathe (Choice C) is a general intervention that may not directly address the specific concern of the low temperature reading.
4. The nurse is caring for a newborn with a myelomeningocele. Before surgery, what should the nursing interventions include?
- A. Leaving the lesion uncovered and placing the infant supine
- B. Covering the lesion with a sterile, saline-soaked gauze
- C. Applying lotion to the lesion to keep it moist
- D. Covering the lesion with a dry, sterile gauze
Correct answer: B
Rationale: The correct intervention before surgery for a newborn with a myelomeningocele is to cover the lesion with a sterile, saline-soaked gauze. This helps protect the exposed spinal cord and meninges from infection and damage. Choice A is incorrect because leaving the lesion uncovered can increase the risk of infection. Choice C is incorrect because applying lotion can introduce contaminants to the lesion. Choice D is incorrect because covering the lesion with a dry gauze can lead to adherence of the gauze to the wound, causing trauma upon removal and disrupting the healing process.
5. A client with deep vein thrombosis (DVT) is receiving heparin therapy. Which laboratory test should the nurse monitor to evaluate the effectiveness of the heparin?
- A. Complete blood count (CBC)
- B. Activated partial thromboplastin time (aPTT)
- C. Prothrombin time (PT)
- D. International normalized ratio (INR)
Correct answer: B
Rationale: The correct answer is B: Activated partial thromboplastin time (aPTT). This test is used to monitor the effectiveness of heparin therapy. A complete blood count (CBC) (choice A) is not specific for monitoring heparin therapy. Prothrombin time (PT) (choice C) and International normalized ratio (INR) (choice D) are more commonly used to monitor warfarin therapy, not heparin.
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