14
Figures
Classification of Ventilatory Impairments Defined
by Lung Volumes
a
TLC FRC RV FRC/TLC RV/TLC
Large lungs
Normal Normal
Obstruction
Normal/
Normal/
Normal/
Simple Restriction
Normal Normal
Complex Restriction
Normal/
Normal
Mixed Disorder
Normal/
Normal/
Normal/
Normal/
Muscle weakness
Normal/
Suboptimal effort
Normal
Obesity
Normal/
Normal/
Normal/
Normal/
a
See Figure 7 on pages 12–13.