[The efficacy of tiotropium bromide (spiriva) in the treatment of patients with chronic obstructive pulmonary disease of varying severity: results of the Russian trial].

AIM

To evaluate the efficacy and safety of Spiriva (thiotropium bromide 18 microg for inhalation via a HandiHaler device) in patients with chronic obstructive pulmonary disease (COPD) of all severities in routine clinical practice in Russia.

SUBJECTS AND METHODS

The study enrolled 407 patients (68 women and 339 men) with COPD who used thiotropium bromide (Spiriva) for 8 weeks. Most (72.3%) of the patients were aged 50-70 years; active smokers were 64.9%; ex-smokers were 27%; smoking duration averaged 38.6 pack-years; Severe, moderate, very severe, and mild COPD was observed in 38.6, 37.3, 18.4, and 5.7%, respectively. By the start of the trial, 305 (74.5%) had received concomitant therapy.

RESULTS

After 8-week thiotropium bromide therapy, there was a significant increase in bronchial patency, as suggested by considerable increments in the postbronchial indices: forced expiratory volume in one second (FEV1) by an average of 290 ml (20.4%) of the baseline level during treatment and forced vital capacity (FVC) by 310 ml (12.1%). By the end of the trial, the mean increase in inspiratory capacity (IC) by 180 ml (8.07%) of the baseline value was indicative of decreased lung hyperinflation in the treated patients. The significant increment in mean FEV1, FVC, and IC was observed in patients with any severity of COPD.

CONCLUSION

The RUSSE study has indicated that there may be very good results in patients with COPD of any severity and a steady-state positive effect just after 8-week thiotropium bromide treatment. This treatment improves bronchial patency and diminishes lung hyperinflation, thus improving the patients' health status and exercise endurance.