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Figurę 1.3 Classification of severity of COPD (GOLD 2001 and 2003 update)

Stage		Syrrptoms	Lung function
GOLD, 2003	GOLD. 2001		FEV,/FVC	F£V\ (% predicted)
0: Atrisk	0	chronic productive cough	normal	normal
1: Mild	1	with or without symptoms	<70%	>80%
II: Moderate !	„A	with or without symptoms	< 70%	50-80%
III: Severe	116	with or without symptoms	< 70%	30-50%
IV: Verysevere		*dyspnea, cough. sputum respiratory failure or right heart failure	<70%	*< 30%