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Shortness of breath associated with chronic conditions among those with and without asthma or COPD

Joshua Lawson, Shelley Kirychuk, Rhonda Bryce, Punam Pahwa, Chandima Karunanayake, Louise Hagel, Donna Rennie, James Dosman
European Respiratory Journal 2012 40: P3971; DOI:
Joshua Lawson
1Canadian Center for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Canada
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Shelley Kirychuk
1Canadian Center for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Canada
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Rhonda Bryce
1Canadian Center for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Canada
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Punam Pahwa
1Canadian Center for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Canada
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Chandima Karunanayake
1Canadian Center for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Canada
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Louise Hagel
1Canadian Center for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Canada
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Donna Rennie
1Canadian Center for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Canada
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James Dosman
1Canadian Center for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Canada
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Abstract

Background: Some chronic conditions may result from similar underlying mechanisms or may exacerbate lung disease suggesting the investigation of disease inter-relationships. We sought to determine if SOB was more common among adults with chronic conditions and to examine this association among those with and without asthma or COPD.

Methods: In 2010 we conducted a cross-sectional mail survey of rural households as part of the Saskatchewan Rural Health Study. One adult per home provided information about each adult living in the home. There were 8261 adults from 4624 households (42% participation) included. We examined the associations between reported diagnosed chronic conditions (diabetes, cardiovascular disease, and sleep apnea) and SOB after adjusting for potential confounders and stratifying by history of doctor-diagnosed asthma or COPD. High SOB was defined by a score of ≥3 on the MRC breathlessness scale.

Results: The respondents' mean age was 56 years (SD=16 years) with 51% of the population being female. Approximately 14% had a MRC score ≥3. After adjustment, there was increased risk of high MRC score associated with the presence of diabetes [odds ratio (OR)=1.68, 95% confidence interval (CI)=1.32-2.14], cardiovascular disease (OR=2.18, 95%CI=1.80-2.65), and sleep apnea (OR=2.19, 95%CI=1.60-3.00). The associations with SOB were weaker among those with asthma or COPD with the exception of that for sleep apnea, which was stronger.

Conclusions: Some conditions were associated with high SOB among those with and without a history of lung disease. These relationships may result from common pathways, possibly inflammatory, and may precede more serious chronic lung disease.

  • Comorbidities
  • Epidemiology
  • Chronic disease
  • © 2012 ERS
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Shortness of breath associated with chronic conditions among those with and without asthma or COPD
Joshua Lawson, Shelley Kirychuk, Rhonda Bryce, Punam Pahwa, Chandima Karunanayake, Louise Hagel, Donna Rennie, James Dosman
European Respiratory Journal Sep 2012, 40 (Suppl 56) P3971;

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Shortness of breath associated with chronic conditions among those with and without asthma or COPD
Joshua Lawson, Shelley Kirychuk, Rhonda Bryce, Punam Pahwa, Chandima Karunanayake, Louise Hagel, Donna Rennie, James Dosman
European Respiratory Journal Sep 2012, 40 (Suppl 56) P3971;
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