1998 Volume 1998 Issue Supplement96 Pages 51-58
From 1988 to 1997,243 ears with chronic otitis media were treated surgically at the Kawasaki Medical School Hospital.
The patients consisted of 125 males and 118 females, ranging in age from 4 to 80 years old. There were 145 ears with cholesteatomas and 98 ears without cholesteatomas. The former condition affected men more often than women, and especially children. Of the 243 ears,35 ears underwent a closed method tympanoplasty; 195 ears underwent a open method tympanoplasty, and 13ears received a radical mastoidectomy. Tympanoplasty types I, II, III and IV were performed in 82,35,82 and 31 ears, respectively, and the success rate in improved hearing was 69.6%,80.0%,44.4% and 25.9%, respectively. Corynebacterium, Staphylococcus epidermidis and non-fermenting gram negative rods were isolated at a significantly higher incidence from the ear discharge. Twenty-three cases exhibited resorption of the bony wall of the facial nerve (incidence 9.5%) and 11cases had labyrinthine fistulas (incidence 4.5%). Finally, a discussion on the operative techniques for middle ear surgery is presented.
