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坏死性外耳道炎由绿脓杆菌或混合感染引起,好发于老年糖尿病患者,治疗包括静脉给予氨基糖甙及β-丙酰胺类,局部清洗,去除肉芽和控制糖尿病。但在细菌培养阴性及局部病变愈合后的治疗应持续多久仍未取得一致意见。作者报告一例75岁患轻度糖尿病的女患者因右耳剧痛2周入院。外耳道可见一息肉样肿物,渗出物培养有绿脓杆菌。用庆大霉素及羧苄青霉素治疗12天后,培养无菌,外耳道外观正常而停药。3个月后再次入院右侧面肌力弱,右耳剧痛有脓,培养为绿脓杆菌。5天后出现面瘫,即行乳突根治术
Necrotizing otitis externa is caused by Pseudomonas aeruginosa or mixed infections and occurs in older diabetic patients. Treatment includes intravenous administration of aminoglycosides and beta-propionamides, topical washing, granulation exclusion and diabetes control. However, there is still no consensus on how long the treatment of negative bacterial and local lesion should last. The authors report that a 75-year-old female patient with mild diabetes was admitted for 2 weeks because of pain in her right ear. External auditory meatus visible mass of the tumor, exudate culture Pseudomonas aeruginosa. With gentamicin and carbenicillin treatment for 12 days, sterile culture, external appearance of the normal external auditory canal withdrawal. 3 months after admission again on the right side of the weak muscle, pain in the right ear pus, culture Pseudomonas aeruginosa. 5 days after facial paralysis, that line mastodesis