| Abstract: |
In many cases of otitis media, it has been found that there is ansociaion with an upper respiratory tract infection. The role of theustachian tube has been a controversy in such association whether it actsas a route for ascending infection from the site of upper respiratory tractection to the middle ear cavity, or it is just inflamed and obstructed by theection and then the middle ear starts its own pathology.It is the aim of our study, on bacteriological basis, to find if there isany correlation between the bacteriology of nose, paranasal sinuses, and thenasopharynx, in cases with infection in any of these sites, and thebacteriology of the middle ear.The study has been conducted on 150 patients with 150 dischargings, associated with an upper respiratory tract infection, whether rhinitis,nasopharyngitis or maxillary sinusitis. 50 with A.S.O . .tvf., 50 with C.S.O.l’t>f.of tubo tympanic type, and 50 with C.S.O.l\.f. of attico antral type(cholesteatoma) .The bacteriology of the nose, nasopharynx, and maxillary sinus hasbeen examined and compared with that of the middle ear cavity in everyThe results showed that 71. 6 ~’O of all cases included in this studyshowed the same organism in cultures from all sites, (90 %) of cases ofAS.O.M., 76 ~i> of cases of C.S.O.11. of tubo tympanic type, and 48 ~’O ofcases of cholesteatoma).
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