Hearing is normally evaluated up to 8 kHz, even though testing can easily be performed at higher frequencies (up 16 or 20 kHz). The range beyond kHz often referred as the extended high frequency (EHF) range. This study aimed explore relationship between EHF hearing thresholds (HTs) and distortion product otoacoustic emissions (DPOAEs) in adult subjects. Also of interest were effects presence sp...

Otoacoustic emissions (OAEs) have become a commonly used clinical tool for assessing cochlear health status, in particular, the integrity of the cochlear amplifier or motor component of cochlear function. Predicting hearing thresholds from OAEs, however, remains a research challenge. Models and experimental data suggest that there are two mechanisms involved in the generation of OAEs. For disto...

Objective We aim to demonstrate inner ear damage caused by drilling in the early period. Healthy contralateral ears of patients who underwent mastoidectomy using drill or tympanoplasty without using drill were compared. Methods A total of 38 patients (mastoidectomy: 22, tympanoplasty: 16) who were diagnosed as chronic otitis media and were scheduled for surgery were included. Distortion produ...

We treated 80 patients with sudden hearing loss and 70 patients with chronic decreasing cochlear function to date with intravenous infusion of a glycoprotein analogous to recombinant tissue-type plasminogen activator (rt-PA): 3 mg dissolved in 250 mg of physiological saline given every 12 hours intravenously. Specifically excluded were patients with known abnormal coagulation. We treated no pat...