Bronchitis 1. Acute bronchitis It is an acute inflammation of the tracheobronchial tree generally self-limited and with eventual complete healing and return of function. Etiology: Viruses: The commonest causative agents
Predisposing factors:. Chronic bronchopulmonary diseases . Environmental irritants like indoor air pollution and tobacco smoking
Clinical features: Symptoms of upper respiratory infection proceed acute infectious bronchitis.
Initially dry cough followed by productive cough with mucoid or mucopurulent expectoration, low grade fever and substernal chest pain. Frank purulent sputum suggests super imposed bacterial infection..
Laboratory diagnosis: Specimen: Sputum Procedure: Gram staining, serological test for microbe identification. Treatment: Antibiotics are indicated when: .There is concomitant chronic diseases. culture, biochemical and obstructive pulmonary