when a client needs oxygen therapy what is the highest flow rate that oxygen can be delivered via nasal cannula
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1. When a client needs oxygen therapy, what is the highest flow rate that oxygen can be delivered via nasal cannula?

Correct answer: C

Rationale: The correct answer is 6 liters/minute. When a client requires oxygen therapy, the maximum flow rate that oxygen can be delivered via nasal cannula is 6 liters/minute. Nasal cannula can effectively deliver oxygen up to 6 liters/minute. Flow rates exceeding 6 liters/minute may lead to drying of the nasal passages and discomfort for the client. Higher flow rates, like 8 liters/minute, should be administered using a mask to ensure sufficient oxygenation. Options A, B, and D are incorrect as they indicate flow rates that surpass the recommended maximum for nasal cannula delivery.

2. What intervention should the nurse take for a client who has sustained a hyphema?

Correct answer: B

Rationale: The correct intervention for a client who has sustained a hyphema is to keep them at bed rest, usually with the head of the bed raised. This positioning helps to reduce intraocular pressure and prevent further damage or rebleeding. Instructing the client to wear eye protectors in the future (Choice A) is not the immediate intervention required for a hyphema. Applying atropine eyedrops (Choice C) is not typically indicated for a hyphema. Applying an ice pack to the site of injury (Choice D) is not recommended for a hyphema as it can increase the risk of rebleeding. Therefore, the correct answer is to keep the client at bed rest.

3. A nurse is planning client assignments for the day. Which task should the nurse assign to the nursing assistant (unlicensed assistive personnel)?

Correct answer: A

Rationale: The nurse is legally responsible for client assignments and must assign tasks based on state nursing practice act guidelines and job descriptions provided by the employing agency. The nursing assistant is trained to measure, collect, and strain urine, making recording urinary output for a client with renal calculi a suitable task for the nursing assistant. This task falls within the nursing assistant's role description. Dressing change instructions for a client who had a mastectomy involve a higher level of skill and knowledge, beyond the scope of a nursing assistant. Reporting abnormal lab values to the health care provider for a client scheduled for a laparoscopic cholecystectomy requires interpretation and clinical judgment, which is typically not within the nursing assistant's role. Preprocedural teaching for a client scheduled for a cardiac stress test involves providing detailed information and education, which is usually the responsibility of a licensed nurse or other qualified healthcare provider.

4. The LPN is assisting the client with an NG tube with activities of daily living. Which of these statements would indicate a need for teaching reinforcement?

Correct answer: A

Rationale: The correct answer is, "Since I'm not eating or drinking by mouth, I do not need to brush my teeth as often."? This statement indicates a need for teaching reinforcement because even when an NG tube is in place, the client should still brush their teeth twice daily. Good oral hygiene is essential to reduce the risk of introducing bacteria that may cause an infection. Choice B is incorrect because remaining sitting up at a 45-degree angle or higher for 30 minutes after a feeding is a correct statement regarding NG tube care, promoting proper digestion and reducing the risk of aspiration. Choice C is also incorrect because cleaning around the tube with water and mild soap is an appropriate practice to maintain cleanliness and prevent infection. Choice D is incorrect because advising to avoid using Vaseline around the nostril and tube is a proper instruction to prevent skin breakdown, occlusion of the tube, and potential aspiration of Vaseline into the lungs.

5. A client with which of the following conditions is at risk for developing a high ammonia level?

Correct answer: D

Rationale: A client with cirrhosis is at risk for developing a high ammonia level due to impaired liver function. The liver normally converts ammonia into urea for excretion. In cirrhosis, this process is compromised, leading to elevated ammonia levels in the blood. Renal failure, psoriasis, and lupus do not typically cause high ammonia levels. Renal failure affects kidney function, while psoriasis and lupus are autoimmune conditions that do not directly impact ammonia metabolism.

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