《英文msh词典》Bronchitis,Chronic
[主题词] Bronchitis,Chronic
[入口词] Chronic Bronchitis
[中文释义] 支气管炎,慢性
[英文释义] A subcategory of CHRONIC OBSTRUCTIVE PULMONARY DISEASE. The disease is characterized by hypersecretion of mucus accompanied by a chronic (more than 3 months in 2 consecutive years) productive cough. Infectious agents are a major cause of chronic bronchitis.