Evoked response audiometry in XXXX : prospective, randomised, case-control study.

@entity1 @entity16 @entity9556 @entity393
OBJECTIVE: To investigate the hypothesis of cochlear and @entity16 in @entity9556 , using evoked response audiometry. STUDY DESIGN: Prospective, randomised, case-control study. METHODS: The study included 25 @entity1 with @entity9556 and 25 controls with other febrile illnesses not known to cause @entity393 . Controls were age- and sex-matched. All subjects underwent pure tone audiometry and evoked response audiometry before commencing treatment. RESULTS: Six @entity1 presented with @entity393 , although a total of 23 @entity1 had evidence of symmetrical high frequency loss on pure tone audiometry. Evoked response audiometry found significant prolongation of absolute latencies of wave I, III, V, and wave I-III interpeak latency. Two cases with normal hearing had increased interpeak latencies. These findings constitute level 3b evidence. CONCLUSION: Findings were suggestive of retrocochlear pathology in two cases with normal hearing. In other @entity1 , high frequency @entity393 may have led to altered evoked response results. Although @entity9556 appears to cause middle ear cochlear and @entity16 , the presence of such damage could not be fully confirmed by evoked response audiometry.
