The chinese subsidiary shanghai longhua hospital , professor hui - yong zhang : " old chronic bronchitis , " which is a very high incidence of the lung disease , the symptoms of recurrent respiratory tract infection , clinical 多 見 cough with sputum , shortness of breath breathing space and time for a long time qi deficiency , fluid yumao , expectoration powerless 上海中醫大附屬龍華醫院呼吸內科張惠勇教授: “老慢支”是一種發病率非常高的肺部疾病,其癥狀表現為反復呼吸道感染,臨床多見咳嗽多痰、喘息氣短、時間久了肺氣虧虛、津液虧耗、咳痰無力。