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Questions and Answers
What does FiO2 stand for in the context of oxygen therapy?
What does FiO2 stand for in the context of oxygen therapy?
What is the primary purpose of the Oxymask?
What is the primary purpose of the Oxymask?
What defines hypoxemia in a clinical context?
What defines hypoxemia in a clinical context?
How is PaO2 measured and what does it indicate?
How is PaO2 measured and what does it indicate?
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What are the characteristics of a Variable FiO2 device?
What are the characteristics of a Variable FiO2 device?
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Study Notes
Oxygen Therapy Definitions
- PaO2: Partial pressure of oxygen in arterial blood, measured in mmHg.
- FiO2: Fractional inspired oxygen content, the percentage of oxygen in the gas being measured. Atmospheric air has a FiO2 of 0.21, while pure medical oxygen has a FiO2 of 1.0.
- SpO2: Saturation of peripheral oxygen, the percentage of hemoglobin in the blood that is saturated with oxygen.
- Hypoxemia: Condition where arterial blood contains low amounts of oxygen (PaO2 less than 80 mmHg).
- Hypoxia: Condition where oxygen delivery to the tissues falls short of cellular needs.
Oxygen Delivery Devices
- Nasal Cannula: Delivers low flow oxygen via prongs inserted into the nostrils; Typical flow rate is 1 to 6 LPM, corresponding to an FiO2 of 0.24 to 0.44.
- Oxymask: Mask designed with a diffuser to concentrate and direct oxygen towards the mouth and nose; Can achieve high and variable FiO2.
Variable FiO2
- Variable FiO2: The FiO2 delivered can be adjusted to the patient's needs.
- Fixed FiO2: The FiO2 delivered is a set value and cannot be adjusted easily.
Oxymask
- Manufacturer: Southmedic Inc.
- Application: Used in hospitals when nasal cannula cannot achieve adequate oxygenation.
- Flow Rates: Respiratory therapist (RT) titrates the oxygen flow to achieve desired patient saturations.
- FiO2: Capable of high and variable FiO2.
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Description
This quiz covers essential definitions and devices related to oxygen therapy. It includes terms such as PaO2, FiO2, and common devices like Nasal Cannula and Oxymask. Test your knowledge on oxygen delivery and related concepts.
