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Oxygen Therapy and Respiratory Care (Oxygenation and Perfusion) > Fundamentals

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Total Questions : 5

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Question 1:

A client with severe hypoxemia requires oxygen therapy. What is the appropriate delivery method for this client?

A. Nasal cannula B. Simple face mask C. Venturi mask D. Non-rebreather mask

Answer and Explanation

Choice A:

Nasal cannula delivers lower concentrations of oxygen and is more appropriate for clients with mild hypoxemia.

Choice B:

Simple face mask delivers moderate concentrations of oxygen and is suitable for clients with stable oxygen needs.

Choice C:

Venturi mask delivers precise concentrations of oxygen and is commonly used in clients with chronic respiratory conditions.

Choice D:

A non-rebreather mask is the most suitable delivery method for a client with severe hypoxemia, as it provides the highest concentration of oxygen (up to 95%) by utilizing a reservoir bag and one-way valves to prevent the rebreathing of exhaled air.

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Question 2:

When administering oxygen therapy, what should the nurse prioritize to ensure the safety of the client?

A. Assessing the client's respiratory rate B. Monitoring oxygen saturation levels C. Evaluating the client's level of dyspnea D. Adjusting the oxygen flow rate as needed

Answer and Explanation

Choice A:

Assessing the client's respiratory rate is important but does not directly measure the adequacy of oxygen therapy.

Choice B:

Monitoring oxygen saturation levels Explanation: Monitoring the client's oxygen saturation levels using a pulse oximeter is crucial to assess the effectiveness of oxygen therapy and ensure the client's oxygen needs are being met adequately.

Choice C:

Evaluating the client's level of dyspnea provides subjective information but does not quantify the client's oxygenation status.

Choice D:

Adjusting the oxygen flow rate as needed is a valid action, but monitoring oxygen saturation levels is essential to guide the adjustment accurately.

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Question 3:

Which intervention should the nurse prioritize to promote effective airway clearance in a client with impaired oxygenation?

A. Providing incentive spirometry exercises B. Administering bronchodilator medications C. Encouraging deep breathing and coughing D. Positioning the client in high Fowler's position

Answer and Explanation

Choice A:

Incentive spirometry exercises help promote lung expansion but are not directly aimed at airway clearance

Choice B:

Bronchodilator medications are primarily used to alleviate bronchospasm and improve airflow, but they may not directly address airway clearance.

Choice C:

Encouraging deep breathing and coughing Explanation: Deep breathing and coughing help to mobilize and clear respiratory secretions, promoting effective airway clearance and improved oxygenation.

Choice D:

Positioning the client in high Fowler's position facilitates lung expansion and may improve oxygenation but does not directly address airway clearance.

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Question 4:

A client with chronic obstructive pulmonary disease (COPD) is prescribed long-term oxygen therapy. What is the most important nursing consideration for this client?

A. Assessing for signs of oxygen toxicity B. Monitoring the client's carbon dioxide levels C. Promoting proper humidification of oxygen D. Ensuring an adequate supply of oxygen

Answer and Explanation

Choice A:

Assessing for signs of oxygen toxicity is important but is not specific to clients with COPD.

Choice B:

Monitoring the client's carbon dioxide levels Explanation: Clients with COPD have a chronic retention of carbon dioxide, so monitoring carbon dioxide levels is essential to prevent the development of respiratory acidosis while providing long-term oxygen therapy.

Choice C:

Proper humidification of oxygen is beneficial but does not take precedence over monitoring carbon dioxide levels in clients with COPD.

Choice D:

Ensuring an adequate supply of oxygen is a general consideration for all clients receiving oxygen therapy and is not specific to clients with COPD.

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Question 5:

A client is receiving oxygen therapy via a nasal cannula. What is the appropriate flow rate for this client?

A. 1-2 liters per minute B. 4-6 liters per minute C. 8-10 liters per minute D. 12-15 liters per minute

Answer and Explanation

Choice A:

1-2 liters per minute may be appropriate for clients with mild hypoxemia or during rest.

Choice B:

4-6 liters per minute Explanation: The appropriate flow rate for oxygen therapy via a nasal cannula typically ranges from 1-6 liters per minute, with 4-6 liters per minute being a common range to achieve adequate oxygenation.

Choice C:

8-10 liters per minute is generally too high for a nasal cannula and may not be well-tolerated by the client.

Choice D:

12-15 liters per minute is excessively high for a nasal cannula and may be more suitable for a higher flow oxygen delivery system such as a non-rebreather mask or Venturi mask.

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