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. Which of the following syndromes associated with incomplete lesions of the spinal cord results from damage to one-half of the spinal cord?

Correct answer: A

Rationale: Brown-S�quard syndrome is indeed associated with incomplete lesions of the spinal cord, and it specifically results from damage to one-half of the spinal cord. This syndrome manifests as ipsilateral motor paralysis, ipsilateral loss of vibration and proprioception, and contralateral loss of pain and temperature sensation. Posterior cord syndrome mainly involves the loss of proprioception and vibratory sense, while sparing motor function and pain sensation. Central cord syndrome typically presents with more weakness in the upper extremities compared to the lower extremities due to central spinal cord damage. Cauda equina syndrome affects the nerve roots at the level of the conus medullaris, leading to symptoms like lower extremity weakness, numbness, and bowel/bladder dysfunction.

3. Which of the following statements describes the purpose of client restraint?

Correct answer: B

Rationale: The correct answer is B. Restraints are used as an emergency intervention when all other options to protect a client from imminent danger have been exhausted. Restraints should only be used as a last resort to ensure the safety of the client and others. Choices A, C, and D are incorrect because restraints are not used to maintain control, reinforce behavior, or are exclusively taken under direct physician supervision. It is crucial to remember that restraint use should always be based on careful assessment, documentation, and adherence to legal and ethical guidelines.

4. A 20-year-old male client had a diving accident with subsequent paraplegia. He says to the nurse, "No woman will ever want to marry me now."? Which of the following responses by the nurse is most therapeutic?

Correct answer: D

Rationale: The correct response is 'Tell me more about your feelings on this issue.' This answer is the most therapeutic as it encourages the client to express his emotions and concerns, fostering a supportive and open dialogue between the client and the nurse. Option A may come across as dismissive and does not directly address the client's emotional state. Option B, while positive, oversimplifies the client's complex feelings. Option C focuses only on physical appearance, missing the opportunity to delve deeper into the client's emotional well-being. Therefore, the most therapeutic response is to encourage further discussion about the client's feelings.

5. A client admitted to the hospital has a do-not-resuscitate (DNR) order in his medical record. The nurse understands which information about DNR orders?

Correct answer: D

Rationale: The correct answer is that the DNR order requires frequent review as specified by state or agency policy. If the client's condition changes, the DNR order may need to be changed. For this reason, DNR orders require frequent review as specified by state or agency policy. A DNR order may be changed at any time and does not remain in effect for the duration of the client's hospitalization. The client's request regarding DNR status is the priority. Choice A is incorrect because healthcare providers, not just immediate family members, may change the DNR order based on the client's condition. Choice B is incorrect as DNR orders can be changed if the client's condition warrants it, not remaining unchanged. Choice C is incorrect as DNR orders are not fixed for the duration of hospitalization, they can be modified based on the client's needs.

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