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Objective : To evaluate the efficiency and safety of the simultaneous endolymphatic sac drainage (ELSD) and posterior semicircular canal fenestration (PSCF) primary on the vestibular function as an new therapeutic strategy in the patients with medically refractory Meniere’s disease (MD). Study Design : retrospective follow-up study. Setting : University Clinic of Otolaryngology. Methods : Twenty-six patients with MD with severe vertigo and disability who underwent ELSD and PSCF in the same time in the period of 1988 and 2007 were reviewed. The main outcome measures were frequency of vertigo, functional disability according the guidelines for diagnosis and evaluation of therapy in MD. The canal paresis was evaluated by caloric test. The degree of reduced vestibular response rates as an indicators of the vestibular function were compared before and after surgery. Results : The preoperative audition was already altered in all cases except in 8 patients who had no significant changes in hearing threshold. The mean value of vertigo attacks before operation was 8.6. After 3 years of surgery only one patient (3.8%) had one vertigo attack. Functional level was highly ameliorated except in two patients who presented functional level 2 or B in the late postoperative period. The mean caloric testing duration after 3 years postoperatively showed that the 50% of the patients approaching the normal results. Conclusion : Based on the results of simultaneous endolymphatic sac surgery and posterior canal fenestration, they are effective methods for treatment of the refractory Meniere’s disease. Endolymphatic sac surgery enables drainage of endolymphatic fluid and the fenestration of the posterior semicircular canal enables the distension or dilatation of the membranous canal in the decompressed perilymphatic space across the perilymphatic leak at the level of the new fenestra, and, so, appearing of certain decrease of the endolymphatic pressure. Both techniques at the same time decrease the pressure in the case of the endolymphatic hydrops.

Endolymphatic Sac Surgery And Posterior Semicircular Canal Fenestration For Meniere’s Disease