Differences Between Obstructive and Restrictive Lung Diseases

Table 1.1	Differences between Obstructive and Restrictive Lung Diseases
	Obstructive	Restrictive
Vital capacity	N or ↓	↓
Total lung capacity	N or ↓	↓
Residual volume	↑	↓
FEV₁/FVC	↓	N or ↑
Maximum midexpiratory flow rate	↓	N
Maximum breathing capacity	↓	N

↓, decreased; ↑, increased; FEV₁, forced expiratory volume in 1 second; FVC, forced vital capacity; N, normal.