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## Respiratory System Terms ### Atelectasis - Collapse of a lung, portion of the lung, or the alveoli. - **Absorption A.** - Collapse of the alveoli due to O2 replacing nitrogen in the alveoli. ### Oxyhemoglobin Dissociation Curve - Plots the relationship of SaO2 to PaO2. - **Relates to how blood...

## Respiratory System Terms ### Atelectasis - Collapse of a lung, portion of the lung, or the alveoli. - **Absorption A.** - Collapse of the alveoli due to O2 replacing nitrogen in the alveoli. ### Oxyhemoglobin Dissociation Curve - Plots the relationship of SaO2 to PaO2. - **Relates to how blood carries and releases O2.** - **Right Shift** - Increase in CO2, Acids (lower pH), 2,3 DPG, and temperature. - Lower affinity for O2; releases O2 easily to cells. - **Left Shift** - Decrease in CO2, Acids (higher pH), 2,3 DPG, and temperature. - Higher affinity for O2; holds on to O2 making release of O2 to cells more difficult. ### Low Flow vs. High Flow Devices - **Know characteristics of each device.** - **Low Flow** - Does NOT supply all the patient's inspiratory flow demand. - **Nasal Cannula** - Pendant Cannula - Nasal Reservoir - **Oxymask** - **Simple Mask**