Evaluation of virtual endoscopy in tympanoplast / 中国耳鼻咽喉头颈外科

ABSTRACT

OBJECTIVE To study the clinical usability of virtual endoscopy(VE) in tympanoplasty.METHODS A total of 102 patients (204 ears) were observed by virtual endoscopy. Tympanoplasty was performed in 72 cases (75 ears) including 53 cases (55 ears) with chronic otitis media and 19 cases (20 ears) with congenital microtia and middle ear dysmorphia. Ossicular chain reconstruction was conducteded in 65 ears at the same time. RESULTS The ossicular chain was showed eroded in 19 ears of 23 patients with cholesteatoma otitis media pre-operatively by VE, but was found eroded in all of 23 ears during operation. The ossicular chain was showed eroded in 29 ears of 32 patients with osteitis otitis media pre-operatively by VE, but during operation it was found 23 ears with malleus and incus eroded, 11 ears without head of stapes or up-structure of stapes. VE showed 18 ears with congenital microtia and middle ear malformation and 2 ears with small tympanic cavity and no ossicular chain preoperatively, and operation proved 17 ears with severe ossicular malformation, 2 ears without stapes, 1 ear with vestibular window atresia. There were 2 ears with sudden hearing loss after tympanoplasty, the VE showed ossicular displacement. The coincidence rates between VE and operation view were 92 % in patients with otitis media and 100 % in patients with congenital microtia and middle ear malformation. CONCLUSION VE can supply reliability data for evaluation of the damaged ossicular chain and efficacy of tympanoplasty.