Abstract
A research on otogenic intracranial complications has been carried out using questionnaire cards over a period from 1971 to June in 1976. The institutions included in the research were a total of 803 otorhinolaryngological departments selected from university hospitals, and national, public, or private hospitals. The results are given below:
1. An increasing tendency has been observed in the incidence of otogenic intracranial com- plications since 1973.
2. A higher incidence in males was noted as compared with females in a ratio of 2:1.
3. In many of the cases, complications developed during the period of treatment at medic-al facilities.
4. The most frequent causative diseases for the otogenic intracranial complications were chronic otitis media with cholesteatoma, followed by chronic suppurative otitis media. There encountered only a few cases in which the complication appeared secondarily to acute otitis media.
5. As causative organisms, staphylococcus and Gram-negative bacillus including proteus vulgaris and pseudomonas aeruginosa were isolated predominantly.
6. The prognosis was proven to be highly favourable except for cases of brain abscess.
