Long-acting bronchodilators with or without inhaled corticosteroids and 30-day readmission in patients hospitalized for COPD
Authors Bishwakarma R, Zhang W, Kuo YF, Sharma G
Received 14 September 2016
Accepted for publication 9 November 2016
Published 31 January 2017 Volume 2017:12 Pages 477—486
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Charles Downs
Peer reviewer comments 2
Editor who approved publication: Dr Richard Russell
Raju Bishwakarma,1 Wei Zhang,1 Yong-Fang Kuo,2,3 Gulshan Sharma1,3
1Department of Internal Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, 2Office of Biostatistics, 3Sealy Center of Aging, University of Texas Medical Branch, Galveston, TX, USA
Background: The ability of a long-acting muscarinic antagonist (LAMA) and long-acting beta 2 agonists (LABAs; long-acting bronchodilators, LABDs) with or without inhaled corticosteroids (ICSs) to reduce early readmission in hospitalized patients with COPD is unknown.
Methods: We studied a 5% sample of Medicare beneficiaries enrolled in Medicare parts A, B and D and hospitalized for COPD in 2011. We examined prescriptions filled for LABDs with or without ICSs (LABDs±ICSs) within 90 days prior to and 30 days after hospitalization. Primary outcome was the 30-day readmission rate between “users” and “nonusers” of LABDs±ICSs. Propensity score matching and sensitivity analysis were performed by limiting analysis to patients hospitalized for acute exacerbation of COPD (AECOPD). Among 6,066 patients hospitalized for COPD, 3,747 (61.8%) used LABDs±ICSs during the specified period. The “user” and “nonuser” groups had similar rates of all-cause emergency room (ER) visits and readmissions within 30 days of discharge date (22.4% vs 20.7%, P-value 0.11; 18.0% vs 17.8%, P-value 0.85, respectively). However, the “users” had higher rates of COPD-related ER visits (5.3% vs 3.4%, P-value 0.0006), higher adjusted odds ratio (aOR) 1.47 (95% CI, 1.11–1.93) and readmission (7.8% vs 5.0%, P-value <0.0001 and aOR 1.48 [95% CI, 1.18–1.86]) than “nonusers”. After propensity score matching, the aOR of COPD-related ER visits was 1.45 (95% CI, 1.07–1.96) and that of readmission was 1.34 (95% CI, 1.04–1.73). The results were similar when restricted to patients hospitalized for AECOPD.
Conclusion: Use of LABDs±ICSs did not reduce 30-day readmissions in patients hospitalized for COPD.
Keywords: COPD, readmission, long-acting bronchodilators, Medicare
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