Abstract
The investigation of the postoperative infection which occurs in succession for the operation on the chronic otitis media was performed at ten university hospitals in Japan. The operating case of 258 patients was registered from January 1994, to June 1994. The cases who had an otorrhea preoperatively were 13.1% in these 258 cases. A postoperative infection was detected in 2.3%. This frequency was small in comparison with the past reports. From these results, it was found out that a postoperative infection happened easily in the case who had an otorrhea preoperatively. It was also found out that postoperative infection happened easily in the case that a pathology was advanced. It is important to control an otorrhea preoperatively to make a postoperative infection decrease. Also it is important to use the New Quinolone of the antimicrobial agent postoperatively to make a postoperative infection decrease. When an otorrhea exists preoperatively, it is important to use an antimicrobial agent in accordance with the sensitivity of the bacteria detected in the otorr hea.
