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Impact of beta2-agonists, beta-blockers, and their combination on cardiac function in elderly male patients with chronic obstructive pulmonary disease

Authors Zeng L, Hu Y, Liu L, Zhang L, Cui H

Received 8 June 2013

Accepted for publication 19 July 2013

Published 10 September 2013 Volume 2013:8 Pages 1157—1165


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 5

Long-Huan Zeng,1,* Yi-Xin Hu,2,* Lin Liu,2 Meng Zhang,1 Hua Cui1

1Second Geriatric Cardiology Division, 2Clinical Department of Geriatrics, Chinese PLA General Hospital, Beijing, People's Republic of China

*These authors contributed equally to this work

Purpose: This study was undertaken to determine the association between cardiac function and therapy with beta2-adrenoceptor agonists (β2-agonists), β-blockers, or β-blocker–β2-agonist combination therapy in elderly male patients with chronic obstructive pulmonary disease (COPD).
Patients and methods: This was a retrospective cohort study of 220 elderly male COPD patients (mean age 84.1 ± 6.9 years). The patients were divided into four groups on the basis of the use of β-blockers and β2-agonists. N-terminal fragment pro-B-type natriuretic peptide (NT pro-BNP), left ventricular ejection fraction (LVEF), and other relevant parameters were measured and recorded. At follow-up, the primary end point was all-cause mortality.
Results: Multiple linear regression analysis revealed no significant associations between NT pro-BNP and the use of β2-agonists (β = 35.502, P = 0.905), β-blockers (β = 3.533, P = 0.989), or combination therapy (β = 298.635, P = 0.325). LVEF was not significantly associated with the use of β2-agonists (β = −0.360, P = 0.475), β-blockers (β = −0.411, P = 0.284), or combination therapy (β = −0.397, P = 0.435). Over the follow-up period, 52 patients died, but there was no significant difference in mortality among the four groups (P = 0.357). Kaplan–Meier analysis showed no significant difference among the study groups (log-rank test, P = 0.362). After further multivariate adjustment, use of β2-agonists (hazard ratio [HR] 0.711, 95% confidence interval [CI] 0.287–1.759; P = 0.460), β-blockers (HR 0.962, 95% CI 0.405–2.285; P = 0.930), or combination therapy (HR 0.638, 95% CI 0.241–1.689; P < 0.366) were likewise not correlated with mortality.
Conclusion: There was no association between the use of β2-agonists, β-blockers, or β-blocker–β2-agonist combination therapy with cardiac function and all-cause mortality in elderly male COPD patients, which indicated that they may be used safely in this population.

Keywords: β2-agonists, β-blockers, β-blocker–β2-agonist combination, elderly COPD patients, cardiac function, mortality

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