Overview
Acute bronchitis is characterized by inflammation of the bronchial airways, often presenting with cough, sputum production, and mild respiratory symptoms. It can be distinguished from pneumonia and chronic bronchitis exacerbations through clinical evaluation and diagnostic testing 1.Diagnosis
Exclude pneumonia and exacerbations of chronic bronchitis through clinical assessment and imaging if necessary 1.
Consider sputum characteristics (color, volume) but recognize that green sputum alone does not necessitate antibiotic therapy 3.
No specific laboratory tests or imaging are universally recommended unless differential diagnoses are being ruled out 1.Management
Symptomatic treatment is primary, including hydration, antitussives, and bronchodilators as needed 1.
Antibiotics are indicated for exacerbations of chronic bronchitis and in selected cases of acute bronchitis where complications or specific pathogens (e.g., Branhamella catarrhalis) are suspected 1.
Lifestyle modifications, particularly smoking cessation, are crucial for long-term management and prevention 3.Special Populations
Smokers: Emphasis on smoking cessation due to recurrent bronchitis risk 3.
Occupational Exposure: Avoidance of irritants like thermal degradation products from certain materials (e.g., Surlyn) to prevent industrial bronchitis 4.Key Recommendations
Exclude pneumonia and chronic bronchitis exacerbations before diagnosing acute bronchitis (Evidence: Moderate 1).
Symptomatic treatment is the mainstay for uncomplicated acute bronchitis (Evidence: Moderate 1).
Consider antibiotics for exacerbations of chronic bronchitis and in selected cases of acute bronchitis with specific indications (Evidence: Moderate 1).
Advise lifestyle modifications, particularly smoking cessation, for patients with recurrent bronchitis (Evidence: Expert opinion 3).
Protect against occupational exposures known to cause respiratory irritation and bronchitis (Evidence: Expert opinion 4).References
1 Martinez FJ. Acute bronchitis: state of the art diagnosis and therapy. Comprehensive therapy 2004. link
2 Fomsgaard JS, Fomsgaard A, Høiby N, Bruun B, Galanos C. Comparative immunochemistry of lipopolysaccharides from Branhamella catarrhalis strains. Infection and immunity 1991. link
3 Davies RJ, Burke P, Edmonds R. Cough with green sputum. The Practitioner 1989. link
4 Burgess KR. Thermal degradation products from an ethylene methacrylic acid copolymer-partial metal salt as the cause of industrial bronchitis. Journal of occupational medicine. : official publication of the Industrial Medical Association 1987. link