Bronchial asthma is a condition of the lungs which is characterized by
Bronchi are hyperreactive to a variety of stimuli to which the patient is exposed intermittently.
Cytologic examination of sputum after an asthmatic attack shows
Characteristic histologic findings of bronchial wall which lead to narrowing of the bronchus include:
Autopsy: Biopsy is rarely done. In patients dying of status asthmatics the lungs are over-expanded and small airways are occluded by mucoid secretions. There is a variable amount of bronchiolar inflammation, including eosinophilic infiltrates. Mucus glands are hyperplastic with hyperplasia of bronchial and bronchiolar smooth muscle
Acute attack of dyspnea, prolonged coughing producing a large quantity of mucous, expiratory wheezing.