Beta-blockers may reduce mortality and risk of exacerbations in patients with chronic obstructive pulmonary disease

Background: Physicians avoid the use of beta-blockers in patients with chronic obstructive pulmonary disease (COPD) and concurrent cardiovascular disease because of concerns about adverse pulmonary effects We assessed the long-term effect of beta-blocker use on survival and exacerbations in patients with COPD Methods: An observational cohort study using data from the electronic medical records of 23 general practices in the Netherlands The data Included standardized information about daily patient contacts, diagnoses, and drug prescriptions Results: In total, the study included 2230 patients 45 years and older with an incident or prevalent diagnosis of COPD between 1996 and 2006 The mean (SD) age of the patients with COPD was 648 (11.2) years at the start of the study, and 53% of the patients were male During a mean (SD) follow-up of 7.2 (2 8) years, 686 patients (30.8%) died and 1055 (47.3%) had at least I exacerbation of COPD. The crude and adjusted hazard ratios with Cox regression analysis of beta-blocker use for mortality were 0.70 (95% confidence interval [CI], 0.59-0.84) and 0.68 (95% Cl, 0.56-0.83), respectively The crude and adjusted hazard ratios for exacerbation of COPD were 0.73 (95% Cl, 0.63-0.83) and 0.71(95% Cl, 0.600 83), respectively The adjusted hazard ratios with the propensity score methods were even lower Subgroup analyses revealed that patients with COPD but without overt cardiovascular disease had similar results Conclusion: Treatment with beta-blockers may reduce the risk of exacerbations and improve survival in patients with COPD, possibly as a result of dual cardiopulmonary protective properties