Introduction Sudden sensorineural hearing loss (SSNHL) is assumed to be multicausal and has often been associated with perilymphatic fistula (PLF). Although RW/OW closure is regularly performed in the treatment pathway of SSNHL in many departments, sofar no evidence was given of the existence of a PLF. The aim of the present study was to evaluate SSNHL cases for CTP.
Material and Methods We evaluated 21 cases of SSNHL for CTP after performing an unsuccessful steroid treatment. During a RW and OW closure, middle ear fluid was taken for CTP evaluation. Additionally, controls were taken from cochlear implant surgery, mastoid surgery and stapes surgery (N=10).
Results We observed a rate of 28,5 % (6 out of 21) positive CTP cases. In 9 cases the results was intermediate. In the group of CTP positive cases, the occurrence of vertigo was more frequent, and the probability of an increase of the PTA after a RW closure higher. All controls were in line with the clinical expectation.
Conclusion CTP testing is a promising tool for the objective evaluation of PLF
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