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2015 ; 10
(ä): 2121-6
Nephropedia Template TP
gab.com Text
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English Wikipedia
Wheezing, a significant clinical phenotype of COPD: experience from the Taiwan
Obstructive Lung Disease Study
#MMPMID26504377
Huang WC
; Tsai YH
; Wei YF
; Kuo PH
; Tao CW
; Cheng SL
; Lee CH
; Wu YK
; Chen NH
; Hsu WH
; Hsu JY
; Wang CC
; Lin MS
Int J Chron Obstruct Pulmon Dis
2015[]; 10
(ä): 2121-6
PMID26504377
show ga
BACKGROUND: COPD is an important public health challenge with significant
heterogeneity of clinical presentation and disease progression. Clinicians have
been trying to find phenotypes that may be linked to distinct prognoses and
different therapeutic choices. Not all patients with COPD present with wheezing,
a possible clinical phenotype that can help differentiate patient subgroups.
METHODS: The Taiwan Obstructive Lung Disease study was a retrospective,
multicenter research study to investigate the treatment patterns of COPD after
the implementation of the Global Initiative for Chronic Obstructive Lung Disease
2011 guidelines. Between November 2012 and August 2013, medical records were
retrieved from patients with COPD aged ?40 years; patients diagnosed with asthma
were excluded. Demographic data, lung function, symptom scores, and acute
exacerbation were recorded and analyzed, and the differences between patients
with and without wheezing were evaluated. RESULTS: Of the 1,096 patients with
COPD, 424 (38.7%) had the wheezing phenotype. The wheezing group had
significantly higher COPD Assessment Test scores (12.4±7.8 versus 10.5±6.7,
P<0.001), higher modified Medical Research Council grade (2.0±1.0 versus 1.7±0.9,
P<0.001), and more acute exacerbations within the past year (0.9±1.3 versus
0.4±0.9, P<0.001) than the nonwheezing group. The postbronchodilator forced
expiratory volume in 1 second was lower in wheezing patients (1.2±0.5 L versus
1.5±0.6 L, P<0.001). Even in patients with maintenance treatment fitting the
Global Initiative for Chronic Obstructive Lung Disease 2011 guidelines, the
wheezing group still had worse symptom scores and more exacerbations. CONCLUSION:
Wheezing is an important phenotype in patients with COPD. Patients with COPD
having the wheezing phenotype are associated with worse symptoms, more
exacerbations, and worse lung function.