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. Nurses caring for clients who have cancer and are taking opioids need to assess for all of the following except:

Correct answer: D

Rationale: When caring for clients with cancer who are taking opioids, nurses need to assess for tolerance, constipation, and sedation as these are common side effects of opioid use. Addiction, however, is not a primary concern when treating pain in terminally ill clients. Terminally ill patients are usually not at risk of developing addiction to opioids due to their short life expectancy and the focus on pain management rather than the potential for addiction. Therefore, the correct answer is 'addiction.' Choices A, B, and C are essential considerations when managing clients on opioids for pain control.

3. What sign might the nurse observe in a client with a high ammonia level?

Correct answer: A

Rationale: Coma is a sign that a nurse might observe in a client with a high ammonia level. Elevated ammonia levels can lead to hepatic encephalopathy, a condition characterized by impaired brain function, which can progress to coma. Edema (choice B) is swelling caused by excess fluid trapped in body tissues, not typically associated with high ammonia levels. Hypoxia (choice C) is a condition of inadequate oxygen supply to tissues and is not directly related to high ammonia levels. Polyuria (choice D) refers to excessive urination and is not a typical sign of high ammonia levels.

4. A client with cirrhosis of the liver presents with ascites. The physician is to perform a paracentesis. For safety, the nurse should ask the client to:

Correct answer: C

Rationale: When performing a paracentesis, the client must be sitting up to allow the fluid to settle in the lower abdomen. To prevent trauma to the bladder while inserting a needle to aspirate the fluid, the bladder must be empty. Choice A is incorrect as excessive fluid intake can make the procedure more difficult due to increased abdominal distension. Choice B is unrelated to the procedure of paracentesis. Choice D is incorrect as the client should be sitting up, not in the prone position, during the procedure.

5. A client is having a seizure; his blood oxygen saturation drops from 92% to 82%. What should the nurse do first?

Correct answer: A

Rationale: When a client is having a seizure and their blood oxygen saturation drops significantly, the priority action for the nurse is to open the airway. This allows for adequate oxygenation and ventilation. Administering oxygen can come after ensuring the airway is clear. Suctioning the client should be done if there is an airway obstruction, and checking for breathing is part of the assessment but opening the airway takes precedence to ensure proper oxygenation and ventilation during a critical event like a seizure.

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