CONSENSUS DEVELOPMENT CONFERENCE
JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
REVIEW
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Acute exacerbation of chronic bronchitis: a primary care consensus guideline.

OBJECTIVE: To develop consensus on appropriate treatment for acute exacerbation of chronic bronchitis (AECB). CHARACTERISTICS AND ETIOLOGY: Patients with chronic bronchitis have an irreversible reduction in maximal airflow velocity and a productive cough on most days of the month for 3 months over 2 consecutive years. An AECB is characterized by a period of unstable lung function with worsening airflow and other symptoms. Most (80%) cases of AECB are due to infection, with half due to aerobic bacteria. The remaining 20% are due to noninfectious causes such as environmental factors or medication nonadherence.

MANAGEMENT: Supportive care should be provided to all patients, which might include removal of irritants, use of a bronchodilator, oxygen, hydration, use of a systemic corticosteroid, and chest physical therapy. Antibacterial treatment should be reserved for patients with at least 1 key symptom (ie, increased dyspnea, sputum production, sputum purulence) and 1 risk factor (ie, age > or = 65 years, forced expiratory volume in 1 second < 50% of the predicted value, > or = 4 AECBs in 12 months, 1 or more comorbidities). A newer macrolide, extended-spectrum cephalosporin, or doxycycline is appropriate for an exacerbation of moderate severity, and high-dose amoxicillin/clavulanate or a respiratory fluoroquinolone should be used for a severe exacerbation. There has been increasing antibacterial resistance by the 3 most prevalent pathogens (Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis).

CONCLUSION: Although all AECB patients should receive supportive care, only patients with at least 1 key symptom and 1 risk factor should receive antibiotic therapy.

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