Ventilation Flashcards
Residual volume
Volume of air remaining in lungs following maximal expiration
Tidal volume
Amount of air inhaled and exhaled during normal resting breathing
Expiratory reserve volume
Volume of air that can be forcefully expelled following a normal expiration
Inspiratory reserve volume
Volume of air that can be forcefully breathed in following a normal inspiration
Forced vital capacity
Amount of air which can be forcibly exhaled from the lungs after taking the deepest breath possible
Forced expiratory volume
Volume of air that can be forcefully expelled in 1 second following a full inspiration
Normally, at least 75% of FVC is exhaled within the first second
Total lung capacity
Sum of residual volume & forced vital capacity
Functional residual capacity
Volume of air remaining in lungs following normal expiration
Vital capacity
The greatest volume of air that can be expelled from the lungs after taking the deepest possible breath
Hyperventilation
Depletion of carbon dioxide (respiratory alkalosis)
Accompanied by- fall in blood pressure, vasoconstriction, syncope, anxiety, wrist cramping)
Immediate treatment: breathing into paper bag until CO2 content of blood returns to normal