Hearing outcome after concurrent endolymphatic shunt and vestibular nerve section.
OBJECTIVE
To determine if endolymphatic shunt surgery concurrent with vestibular nerve section improves hearing outcome compared with vestibular nerve section alone.


METHODS
Retrospective observational study with cross-sectional survey.


METHODS
Tertiary otologic private practice.


METHODS
Thirty-five patients who underwent vestibular nerve section and endolymphatic shunt surgery and 17 patients who had vestibular nerve section alone between 1985 and 2000.


METHODS
Chart review and correspondence for audiogram results and survey.


METHODS
Hearing at last follow-up. Hearing Handicap Inventory, Dizziness Handicap Inventory, Tinnitus Handicap Inventory, and SF-36.


RESULTS
Eight patients in the vestibular nerve section and 15 in the vestibular nerve section and endolymphatic shunt surgery group had an audiogram at more than 16 months after surgery available for review. In the vestibular nerve section group, three patients had same hearing whereas five were worse. In the vestibular nerve section and endolymphatic shunt surgery group, 2 patients showed improvement, 2 were the same, and 11 were worse. There was no significant difference in the change from preoperative pure tone average or Word Discrimination Score to postoperative levels between the surgical groups. Eighteen patients had serviceable hearing preoperatively. Five of 8 in the vestibular nerve section and 4 of 10 in the vestibular nerve section and endolymphatic shunt surgery groups maintained serviceable hearing postoperatively. Of the 52 patients, 33 responded to the survey (63%). There were no significant differences between the groups for Dizziness Handicap Inventory, Hearing Handicap Inventory, Tinnitus Handicap Inventory, or SF-36, suggesting that patient-oriented outcomes are the same in both groups.


CONCLUSIONS
Concurrent endolymphatic shunt surgery and vestibular nerve section does not improve hearing or tinnitus outcome over vestibular nerve section alone.
Moody-Antonio
Stephanie
S
House Ear Clinic and Institute, Los Angeles, California 90057, USA.
House
John W
JW
D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold / Q000502:physiology; D003430:Cross-Sectional Studies; D004185:Disability Evaluation; D004244:Dizziness / Q000175:diagnosis / Q000453:epidemiology; D004712:Endolymphatic Sac / Q000601:surgery*; D004713:Endolymphatic Shunt / Q000295:instrumentation*; D005260:Female; D005500:Follow-Up Studies; D006311:Hearing Disorders / Q000175:diagnosis* / Q000453:epidemiology; D006801:Humans; D008297:Male; D008575:Meniere Disease / Q000503:physiopathology / Q000601:surgery*; D008875:Middle Aged; D013506:Otologic Surgical Procedures / Q000379:methods*; D011182:Postoperative Care; D011184:Postoperative Period; D011300:Preoperative Care; D011788:Quality of Life; D012189:Retrospective Studies; D011795:Surveys and Questionnaires; D014012:Tinnitus / Q000175:diagnosis / Q000453:epidemiology; D014725:Vestibular Nerve / Q000503:physiopathology / Q000601:surgery*