5. The patient displays a negative reversibility test to inhaled bronchodilators as defined by an increase in FEV1 of less than 9% of predicted (or an improvement by less than 200 mL) after administration of 4 puffs of 100 microg salbutamol dose-aerosol inhaler via a spacer, and four puffs of 20 microg ipratropium bromide (Atrovent) administered through a large volume spacer.