急性支气管炎是一种什么病? 急性支气管炎是支气管(气管在肺内的分支)的粘膜发炎,常常继发于重感冒。支气管粘膜上有微小的纤毛,并且由粘性分泌物润滑,可以净化吸入的空气。当支气管受到感染时,便分泌过多粘液,导致呼吸困难,常常引起咳嗽。患者常常伴有发热。病毒是最常见的病因,不过细 What is acute bronchitis? Acute bronchitis is a mucosal inflammation of the bronchi (the branch of the trachea in the lung), often secondary to a cold. Bronchial mucosa with tiny cilia, and by the viscous secretions lubrication, can purify the inhaled air. When the bronchus is infected, it secretes excess mucus, causing difficulty breathing and often coughing. Patients are often accompanied by fever. Viruses are the most common cause, but fine