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 is the correct order regarding the hierarchy of members of the nursing team from least authority to highest authority?

Correct answer: C

Rationale: The correct hierarchy order from least to highest authority in the nursing team is LPN (Licensed Practical Nurse), staff nurse, charge nurse, and nurse manager. LPNs have the least authority, followed by staff nurses who are supervised by charge nurses. Nurse managers oversee the charge nurses, making them the highest authority in this hierarchy. Therefore, choices A, B, and D are incorrect as they do not follow the correct order of authority within the nursing team.

3. The healthcare provider sustains a needle puncture that requires HIV prophylaxis. Which of the following medication regimens should be used?

Correct answer: B

Rationale: In the scenario of a needle puncture requiring HIV prophylaxis, the CDC recommends initiating treatment with two non-nucleoside reverse transcriptase inhibitors, unless there is drug resistance. This regimen is preferred over other options such as a single protease inhibitor or two protease inhibitors due to its effectiveness and safety profile in this specific context. Non-nucleoside reverse transcriptase inhibitors are commonly used in post-exposure prophylaxis due to their activity against HIV and lower risk of resistance development compared to other antiretroviral drug classes.

4. When a physician removes a chest tube, which type of dressing is recommended to be placed over the site?

Correct answer: C

Rationale: Petrolatum gauze is recommended to be placed over the site when a physician removes a chest tube because it forms an airtight seal, helping prevent air from entering the pleural space. This airtight seal is crucial to avoid complications such as a pneumothorax. Transparent dressing is not ideal for this purpose as it may not provide a sufficient seal due to its design. Colloidal dressing and nonadherent dressing are also not suitable for chest tube removal sites as they do not offer the same level of protection against air leakage and may not provide the necessary sealing properties.

5. The nurse assesses a client for physiological risk factors for falls. The nurse should conclude that the client is not at risk if which of the following is discovered?

Correct answer: D

Rationale: The correct answer is intact recent and remote memory. Intact memory function indicates that the client is less likely to be at risk for falls as it suggests cognitive awareness and orientation, which are important for safety. Choices A, B, and C are risk factors for falls: a history of dizziness can lead to imbalance, the need for a wheelchair due to reduced mobility can increase fall risk, and weakness and fatigue when climbing stairs indicate physical limitations that predispose a client to falls. Therefore, these options would suggest an increased risk for falls.

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