|Change in chorda tympani nerve function after two-stage tympanoplasty for cholesteatoma.
|Formal name：Laryngoscope investigative otolaryngology
|Domestic / Foregin
|Volume, Number, Page
|Nishimura Riu, Miuchi Shinya, Ikehata Miki, Sakagami Masafumi, Tsuzuki Kenzo
|OBJECTIVES: Chorda tympani nerve (CTN) function may be damaged more by two-stage than by one-stage surgery for middle ear cholesteatoma. However, few studies have reported the relationship between two-stage cholesteatoma surgery and CTN function. This study aimed to investigate CTN function after two-stage surgery for cholesteatoma. METHODS: In this prospective study, 35 patients underwent two-stage canal wall up tympanoplasty (CWUT). Perioperative CTN function was assessed using questionnaires and electrogustometry (EGM). Participants were categorized into minor, major, and section groups, based on the degree of CTN manipulation during surgery. RESULTS: In the first-stage surgery, posterior tympanotomy with an intact canal wall reduced the degree of CTN manipulation. The incidence of taste disorder after the first-stage surgery was