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Definitions -- the inspiratory capacity plus the functional residual capacity;
the volume of air contained in the lungs at the end of a maximal inspiration;
also equals vital capacity plus residual volume.
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definition of FEV1/fvc - ANSWERS-(WIKIPEDIA)
is a calculated ratio used in the diagnosis of obstructive and restrictive lung
disease.[2][3] It represents the proportion of a person's vital capacity that
they are able to expire in the first second of forced expiration (FEV1) to the
full, forced vital capacity (FVC).[4] The result of this ratio is expressed as
FEV1%.
Normal values are approximately 80%.[5]
definition of FVC - ANSWERS-Forced vital capacity (FVC) is the volume of air
that can forcibly be blown out after full inspiration,[10] measured in liters.
FVC is the most basic maneuver in spirometry tests.
definition of FEV1 - ANSWERS-the volume of air that can forcibly be blown
out in one second, after full inspiration.[10] Average values for FEV1 in
healthy people depend mainly on sex and age, according to the diagram at
left. Values of between 80% and 120% of the average value are considered
normal.[11] Predicted normal values for FEV1 can be calculated online and