4 Oxygen Therapy and Delivery Devices Free Online FlashCards

What principle guides oxygen therapy?

Oxygen is a medication: use the prescribed device and flow, or the applicable emergency protocol, and titrate to the prescribed saturation target.

Which device is a common choice for low-flow oxygen?

A nasal cannula is a common, relatively comfortable choice for a stable patient who needs low-flow oxygen and can breathe comfortably through the nose.

What is the minimum flow stated for a simple face mask?

Use a simple face mask at a flow of at least 5 L/min, while following the prescription and local protocol.

Which device is designed to deliver a more controlled oxygen concentration?

A Venturi mask is designed to provide a more controlled oxygen concentration than a standard cannula or simple mask.

What should happen to a non-rebreather reservoir bag during inspiration?

Keep the reservoir bag inflated during inspiration. An empty or collapsing bag can impair oxygen delivery.

What does pulse oximetry not measure directly?

Pulse oximetry estimates oxygen saturation; it does not directly measure carbon dioxide.

What is the response to falling saturation with worsening breathlessness or drowsiness?

Assess the patient and oxygen equipment, provide support within the applicable protocol, and promptly seek urgent clinical review.

What fire precautions are essential around home oxygen?

Keep oxygen away from smoking, open flames, and other ignition sources because oxygen-enriched environments make fires burn more readily.

Why should a clinician assess whether a pulse-dose device suits a patient?

A pulse-dose device delivers oxygen in response to a detected breath and may not trigger reliably for every user; a clinician should assess device suitability.

Is oxygen concentration from a standard nasal cannula fixed?

The oxygen concentration a patient inspires from a standard nasal cannula varies with breathing pattern and other factors.

Why does a simple face mask require adequate flow?

Adequate flow helps clear exhaled carbon dioxide from the mask.

What should you never do to a simple mask’s exhalation openings?

Do not cover the mask’s exhalation openings; they must remain unobstructed.