The retrospective study in 155 patients surgically treated for chronic otitis media followed and statistically evaluated the state of hearing before and after the operation according to individual postoperative observed symptoms. The significant negative postoperative prognostic factors for the state of hearing should include present secretion from the ear (trepanation cavities) in a long-term observation and present postoperative consequences (conductive, sensori neural hearnig IaSS and vertigo). The non-significant factors include the present secretion in the course of early healing after the operation and postoperatively present granulations in the trepanation cavity. The authors also compared early healing and the long-term state of the ear (trepanation cavities) according to individual preoperative and perioperative characteristics. A more frequent secretion from the ear in the course of early and long-term observation was detected in patients with cholesteatoma, perforation of tympanic, membrane defects of all middle ear ossicles, permanent secretion before the operation, revision operation, less usual plasty of external auditory came (Stacke I, three-lobar), resection of mastoid process and obliteration of trepanation cavity by less usual materials – bone or cartilage.

        Key words: chronic middle ear inflammation, auditory threshold, secretion from ear, trepanation cavity, complication, statistics, prognostic factors