The evaluation of distortion product otoacoustic emissions after stapedotomy

34 patients with otosclerosis operated at the ENT Clinic, were enrolled in this study. Prior and 4 months after stapedotomy the signal of DPOAE and the threshold levels for air and bone conduction were evaluated. No signal of otoacoustic emissions was registered in any of the patients prior stapedotomy. After operation DPOAE was registered in 23 out of 34 examined patients (67.6%).