HESI LPN
Adult Health Exam 1 Chamberlain
1. A 9-year-old is receiving vancomycin 400 mg IV every 6 hours for a methicillin-resistant (Beta-lactam-resistant) Staphylococci aureus (MRSA) infection. The medication is diluted in a 100 mL bag of saline with instructions to infuse over one and a half hours. How many mL/hour should the nurse program the infusion pump?
- A. 50
- B. 67
- C. 57
- D. 70
Correct answer: B
Rationale: To calculate the infusion rate for vancomycin, you need to divide the total volume by the total time of infusion. In this case, the total volume is 100 mL, and the total time is 1.5 hours. Therefore, 100 mL รท 1.5 hours = 67 mL/hour. This means the nurse should program the infusion pump to deliver vancomycin at a rate of 67 mL/hour. Choice A (50) is incorrect as it does not reflect the correct calculation. Choice C (57) is incorrect as it is not the accurate calculation based on the provided information. Choice D (70) is incorrect as it does not correspond to the correct infusion rate calculation.
2. The practical nurse is preparing to administer a prescription for cefazolin (Kefzol) 600 mg IM every six hours. The available vial is labeled, 'Cefazolin (Kefzol) 1 gram,' and the instructions for reconstitution state, 'For IM use add 2 ml sterile water for injection. Total volume after reconstitution = 2.5 ml.' When reconstituted, how many milligrams are in each milliliter of solution?
- A. 400 mg/mL
- B. 500 mg/mL
- C. 450 mg/mL
- D. 350 mg/mL
Correct answer: A
Rationale: After reconstitution, the concentration of cefazolin solution is calculated by dividing the total amount of drug (600 mg) by the total volume after reconstitution (2.5 mL). This gives 600 mg / 2.5 mL = 240 mg/mL. However, the question asks for the concentration in each milliliter of solution after reconstitution, so we need to consider the final volume of 2.5 mL. Therefore, 240 mg/mL * 2.5 mL = 600 mg, which means each milliliter contains 240 mg of cefazolin. Therefore, after reconstitution, there are 400 mg of cefazolin in each milliliter of solution. Choices B, C, and D are incorrect as they do not accurately reflect the concentration after reconstitution.
3. When assisting a client to obtain a sputum specimen, the nurse observes the client cough and spit a large amount of frothy saliva in the specimen collection cup. What action should the nurse implement next?
- A. Advise the client that suctioning will be used to obtain another specimen
- B. Re-instruct the client in coughing techniques to obtain another specimen
- C. Provide the client a glass of water and mouthwash to rinse the mouth
- D. Label the container and place the container in a biohazard transport bag
Correct answer: C
Rationale: After observing the client cough and produce frothy saliva in the collection cup, the nurse should provide the client with a glass of water and mouthwash to rinse the mouth. This action helps clear the mouth of contaminants, ensuring a more accurate sputum specimen for diagnostic testing. Option A is incorrect because suctioning is not the appropriate next step in this situation. Option B is unnecessary as re-instructing the client in coughing techniques may not address the immediate issue of contaminated saliva in the specimen. Option D is premature since labeling and transporting the container should only be done after obtaining a valid specimen.
4. During a home visit, a nurse finds that an elderly client is having trouble remembering to take their medications. What is the best intervention?
- A. Set up a pill organizer
- B. Involve family members in care
- C. Arrange for a home health aide
- D. Implement all of the above
Correct answer: D
Rationale: The best intervention when an elderly client is having trouble remembering to take their medications is to implement all of the above options. Setting up a pill organizer helps in organizing and remembering medication schedules. Involving family members in care ensures additional support and reminders. Arranging for a home health aide can provide direct assistance and supervision. Implementing all these strategies together can significantly improve medication adherence, especially in clients with memory issues. Each option plays a crucial role in addressing different aspects of the problem, making 'Implement all of the above' the most comprehensive and effective choice.
5. A client is admitted to the hospital with a diagnosis of Pneumonia. Which intervention should the nurse implement to prevent complications associated with Pneumonia?
- A. Encourage mobilization and ambulation
- B. Encourage energy conservation with complete bed rest
- C. Provide humidified oxygen via nasal cannula
- D. Restrict oral (PO) and intravenous fluids
Correct answer: A
Rationale: The correct intervention to prevent complications associated with pneumonia is to encourage mobilization and ambulation. These activities help prevent complications such as atelectasis by promoting lung expansion. Encouraging energy conservation with complete bed rest (Choice B) is not ideal as it can lead to complications like muscle weakness and decreased lung expansion. Providing humidified oxygen via nasal cannula (Choice C) is important in pneumonia treatment but does not directly prevent complications associated with pneumonia itself. Restricting oral (PO) and intravenous fluids (Choice D) is not recommended as adequate hydration is crucial for pneumonia patients to maintain respiratory function and overall health.
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