TY - JOUR
T1 - Prevalence of night-time dyspnoea in COPD and its implications for prognosis
AU - Lange, Peter
AU - Marott, Jacob Louis
AU - Vestbo, Jørgen
AU - Nordestgaard, Børge Grønne
N1 -
ERJ June 1, 2014 vol. 43 no. 6 1590-1598
PY - 2014
Y1 - 2014
N2 - The information on night-time symptoms in chronic obstructive pulmonary disease (COPD) is sparse.We investigated the prevalence of night-time dyspnoea in 6616 individuals with COPD recruited from the general population in the Copenhagen area, Denmark, and described characteristics and prognosis of subjects with this symptom.The prevalence of night-time dyspnoea was 4.3%: 2.1% in Global Initiative for Chronic Obstructive Lung Disease (GOLD) group A, 12.9% in GOLD B, 2.6% in GOLD C and 16.3% in GOLD D. Compared with individuals without night-time dyspnoea, those with night time dyspnoea had lower forced expiratory volume in 1 s, higher daytime dyspnoea scores (modified Medical Research Council scale) and more wheezing, more often had chronic mucus hypersecretion, ischaemic heart disease and atrial fibrillation, and more often reported stress, nervousness and tiredness. After adjustment for age and sex, the presence of night-time dyspnoea was associated with future COPD exacerbations (hazard ratio (HR) 2.3, 95% CI 1.7-3.0), hospital admissions due to COPD (HR 3.2, 95% CI 2.3-4.4) and mortality (HR 1.7, 95% CI 1.2-2.3).Prevalence of night-time dyspnoea in COPD increases with disease severity according to both spirometric and clinical GOLD classification, and is associated with presence of daytime respiratory symptoms and cardiac comorbidities. Night-time dyspnoea is a significant predictor of poor prognosis in individuals with COPD.
AB - The information on night-time symptoms in chronic obstructive pulmonary disease (COPD) is sparse.We investigated the prevalence of night-time dyspnoea in 6616 individuals with COPD recruited from the general population in the Copenhagen area, Denmark, and described characteristics and prognosis of subjects with this symptom.The prevalence of night-time dyspnoea was 4.3%: 2.1% in Global Initiative for Chronic Obstructive Lung Disease (GOLD) group A, 12.9% in GOLD B, 2.6% in GOLD C and 16.3% in GOLD D. Compared with individuals without night-time dyspnoea, those with night time dyspnoea had lower forced expiratory volume in 1 s, higher daytime dyspnoea scores (modified Medical Research Council scale) and more wheezing, more often had chronic mucus hypersecretion, ischaemic heart disease and atrial fibrillation, and more often reported stress, nervousness and tiredness. After adjustment for age and sex, the presence of night-time dyspnoea was associated with future COPD exacerbations (hazard ratio (HR) 2.3, 95% CI 1.7-3.0), hospital admissions due to COPD (HR 3.2, 95% CI 2.3-4.4) and mortality (HR 1.7, 95% CI 1.2-2.3).Prevalence of night-time dyspnoea in COPD increases with disease severity according to both spirometric and clinical GOLD classification, and is associated with presence of daytime respiratory symptoms and cardiac comorbidities. Night-time dyspnoea is a significant predictor of poor prognosis in individuals with COPD.
U2 - 10.1183/09031936.00196713
DO - 10.1183/09031936.00196713
M3 - Journal article
C2 - 24488571
SN - 0903-1936
VL - 43
SP - 1590
EP - 1598
JO - European Respiratory Journal
JF - European Respiratory Journal
IS - 6
ER -