OBJECTIVE: This study examines the effectiveness of acoustic reflexes in screening for third @entity74 (eg, superior semicircular canal dehiscence) prior to middle ear exploration for conductive @entity393 . STUDY DESIGN: Case series with chart review. SETTING: Outpatient tertiary otology center. SUBJECTS AND METHODS: A review was performed of 212 ears with acoustic reflexes, performed as part of the evaluation of conductive @entity393 in @entity1 without evidence of @entity102 media. The etiology of @entity393 was determined from intraoperative findings and computed tomography imaging. The relationship between acoustic reflexes and conductive @entity393 etiology was assessed. RESULTS: Eighty-eight percent of ears (166 of 189) demonstrating absence of all acoustic reflexes had an ossicular etiology of conductive @entity393 . Fifty-two percent of ears (12 of 23) with at least 1 detectable acoustic reflex had a nonossicular etiology. The positive and negative predictive values for an ossicular etiology were 89% and 57% when acoustic reflexes were used alone for screening, 89% and 39% when third window symptoms were used alone, and 94% and 71% when reflexes and symptoms were used together, respectively. CONCLUSION: Acoustic reflex testing is an effective means of screening for third @entity74 in @entity1 with a conductive @entity393 . Questioning for third window symptoms should complement screening. The detection of even 1 acoustic reflex or third window symptom (regardless of reflex status) should prompt further workup prior to middle ear exploration.

Acoustic Reflex Screening of Conductive Hearing Loss for XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity393 :: ('MESH:D034381', 'Disease') :: ['hearing loss'] @entity74 :: ('MESH:D030342', 'Disease') :: ['window disorders'] @entity102 :: ('MESH:D002908', 'Disease') :: ['chronic otitis']
@entity74 :: (MESH:D030342,Disease) :: ['Third Window Disorders']
