鉴于慢性化脓性中耳炎菌群时常变化,治疗中应了解细菌特性及药敏改变。通常认为常见需氧菌有绿脓杆菌(42%)、金黄色葡萄球菌(39.8%)、普通变形杆菌(33.2%)、肺炎克雷白氏杆菌(15%)及大肠杆菌(8.3%);厌氧菌有脆弱类杆菌、消化链球菌及丙酸杆菌。革兰氏阴性杆菌通常对红霉素(58.8%)、四环素(47.1%)、卡那霉素(41.2%)、氯霉素(35.3%)等较敏感,另对氟嗪酸。哌拉西林, In view of chronic suppurative otitis media flora often change, the treatment should be aware of bacterial characteristics and susceptibility changes. Common aerobic bacteria are generally considered to be Pseudomonas aeruginosa (42%), Staphylococcus aureus (39.8%), Proteus vulgaris (33.2%), Klebsiella pneumoniae (15%) and Escherichia coli (8.3%); Anaerobic fragile Bacteroides, Peptostreptococcus and Propionibacterium. Gram-negative bacilli are usually more susceptible to erythromycin (58.8%), tetracycline (47.1%), kanamycin (41.2%), chloramphenicol (35.3%) and others. Piperacillin,