[Long-term results of endolymphatic sac mastoid drainage for Ménière disease]

Objective:To investigate the long-term efficacy of endolymphatic sac mastoid drainage for Ménière disease.Method:Data from 26 patients diagnosed with MD strictly meeting the criteria issued by " Guideline of diagnosis and treatment of Meniere disease(2017)" from 2006 to 2015 were analyzed in this study.Endolymphatic sac mastoid shunt surgery was performed for each patient.The therapeutic effect was evaluated against the " Guideline of diagnosis and treatment of Meniere disease(2017)".Vertigo control and auditory function were measured after at least two years follow up.Result:In 26 cases,16 cases were male and 10 cases were femaleThe age ranged from 24 to 71 years old,with an average of 52.04 years.The disease duration ranged from 1 to 32 years.22 cases were diagnosed as unilateral Ménière disease,and bilateral involvement was identified in 4 cases,thus a total of 30 ears were included.According to the preoperative staging of hearing,there were 0 cases in stage one,5 cases in stage two,16 in stage three and 9 cases in stage four.15 cases(57.7%)achieved class A vertigo conrol(complete control),9 cases(34.6%)class B(substantial control)and 2 cases(7.7%)class D(no control).The severity of vertigo and its impact on daily life were improved in 24 cases(92.3%)with a score of 0 point,and 2 cases(7.7%)scored 2 points.Post-operative hearing was improved in 3 cases(11.5%),unchanged in 16 cases(61.6%)and worsened in 7 cases(26.9%).After operation,tinnitus disappeared in 5 cases(19.2%),reduced in 13 case(50%)and unchanged in 8 cases(30.8%).Conclusion:Endolymphatic sac mastoid drainage was an effective and safe management for intractable Ménière disease patients with pre-operative residual hearing.The occurrence of complication was unsual.The patients who are in stage four could gain benifits from the surgery.