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Chronic obstructive pulmonary isease (COPD) involves a group of progressive lung disorders characterized by persistent airflow limitation and chronic respiratory symptoms. Asthma-COPD Overlap Syndrome (ACOS), encompassing features of both asthma and Chronic obstructive pulmonary disease (COPD), is a group of progressive lung disorders that includes chronic bronchitis, emphysema, and refractory (non-reversible) asthma. ACOS leads to complex clinical presentations that combine the inflammatory...
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How does comorbid bronchiectasis affect asthmatic patients? A meta-analysis.

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Summary
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Bronchiectasis is common in severe asthma patients, affecting 35.2%. This comorbidity is linked to older age, longer disease duration, increased severity, more exacerbations, hospitalizations, and worse lung function in asthma patients.

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Area of Science:

  • Pulmonology
  • Respiratory Medicine
  • Clinical Epidemiology

Background:

  • Asthma and bronchiectasis are distinct respiratory diseases.
  • Severe asthma patients exhibit a high prevalence of bronchiectasis.
  • Understanding bronchiectasis's impact on asthma is crucial.

Purpose of the Study:

  • To evaluate the impact of comorbid bronchiectasis on patients with asthma.
  • To synthesize evidence on the characteristics and outcomes of asthma patients with bronchiectasis.

Main Methods:

  • Comprehensive literature search of PubMed, Embase, Cochrane, and Web of Science databases.
  • Inclusion of six observational studies with 1004 patients in a meta-analysis.
  • Independent article selection and data extraction by two investigators.

Main Results:

  • The prevalence of bronchiectasis in asthma patients was 35.2%.
  • Asthma patients with bronchiectasis were older, had longer disease duration, and greater severity.
  • Comorbid bronchiectasis was associated with more frequent exacerbations, hospitalizations, and poorer lung function.

Conclusions:

  • Comorbid bronchiectasis significantly impacts asthma patients.
  • Bronchiectasis should be considered a clinical phenotype of asthma.
  • This comorbidity may be associated with increased exacerbations and hospitalizations.