• Primary objective of this observational study was to gain insights into the effects of therapy with Spiriva® (tiotropium bromide) 18 microgram on the health-related quality of life and physical functioning in patients with chronic obstructive pulmonary disease (COPD) and demonstrated hyperinflation.
• Secondary objective was to obtain safety data regarding adverse events.

Inclusion Criteria:

• Women and men with diagnosis of chronic obstructive pulmonary disease (COPD) with a thoracic gas volume (TGV) > = 120% as measured by body plethysmography
• Only patients who have not yet been treated with Spiriva® 18 micrograms can be included in the study.

Exclusion Criteria:

• Patients who presenting the general and specific contraindications mentioned in the Patient Information and Prescribing Information