毛细支气管炎可由多种病原菌感染引起,多见于2岁以内,尤其以2～6个月婴儿多见。发病季节随地理区域而异。主要病变在毛细支气管炎,但常累及支气管及肺泡。临床上除发热,咳嗽和呼吸困难外,喘憋为突出表现,体征以喘鸣为主。肺基部可听到细湿啰音,严重者可发生心力衰竭,是一种特殊类型的肺 Bronchiolitis can be caused by a variety of pathogen infections, more common in 2 years of age, especially in 2 to 6 months more common in infants. The onset season varies by geographic area. The main lesion in bronchiolitis, but often involving the bronchus and alveoli. In addition to clinical fever, cough and breathing difficulties, wheezing as a prominent performance, signs of wheezing-based. Lung base can be heard fine wet rales, severe heart failure can occur, is a special type of lung