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Impact of non-tuberculous mycobacteria on pulmonary function decline in chronic obstructive pulmonary disease.
MedLine Citation:
PMID:  22325332     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE: Although chronic obstructive pulmonary disease (COPD) is a common form of structural lung disease associated with pulmonary non-tuberculous mycobacteria (NTM) infection, no longitudinal studies have investigated the role of NTM in COPD disease progression.DESIGN: From 2000 to 2008, spirometry-confirmed COPD patients with sputum specimens sent for mycobacterial cultures were included. Analysis of clinical, microbiological and pulmonary function data was performed.RESULTS: The 251 patients were divided into three groups according to the number of NTM isolates: multiple (n = 47), single (n = 63), and no (n = 141) isolates. Mycobacterium avium complex was the most common species in multiple isolates (36.2%) and single isolate (28.6%) groups. Overall, 24.7% of COPD patients had been admitted for exacerbations at least once a year, and patients with multiple and single NTM isolates were more than twice as likely as those with no isolate to experience such exacerbations (38.3% vs. 31.7% vs. 17.0%). After controlling for confounders, patients with multiple NTM isolates had a greater decline in forced expiratory volume in one second than those with single or no isolates (-79.4 ± 32.8 ml vs. -61.6 ± 31.9 ml and -56.2 ± 31.5 ml).CONCLUSION: This study suggests that NTM may play a role in disease progression and deterioration of pulmonary function in COPD patients.
Authors:
C-T Huang; Y-J Tsai; H-D Wu; J-Y Wang; C-J Yu; L-N Lee; P-C Yang
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-8
Journal Detail:
Title:  The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease     Volume:  -     ISSN:  1815-7920     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-2-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706389     Medline TA:  Int J Tuberc Lung Dis     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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