introduction carhart's notch (cn) is a major audiometric criterion for diagnosis of otosclerosis; it is an abnormal audiometric pattern due to fixation of stapes and relative reduction in perilymphatic motion. methods 130 patients (146 diseased ears) were evaluated in this study. audiometric tests were performed for each patient 2 weeks before and 6 month after surgery, and the average decline ...

BACKGROUND Different mechanisms have been proposed to be involved in tinnitus generation, among them reduced lateral inhibition and homeostatic plasticity. On a perceptual level these different mechanisms should be reflected by the relationship between the individual audiometric slope and the perceived tinnitus pitch. Whereas some studies found the tinnitus pitch corresponding to the maximum he...

OBJECTIVES/HYPOTHESIS To establish the prevalence of abnormal vestibular test findings in children with enlarged vestibular aqueduct (EVA) and determine if these findings correlate with clinical symptoms, radiographic findings (EVA size and laterality), audiometric findings, and genetic testing in these patients. STUDY DESIGN Prospective cohort. METHODS Patients 3 to 12 years of age with he...

Audiometric thresholds and otoacoustic emissions (OAEs) were measured in 285 U.S. Marine Corps recruits before and three weeks after exposure to impulse-noise sources from weapons' fire and simulated artillery, and in 32 non-noise-exposed controls. At pre-test, audiometric thresholds for all ears were <or=25 dB HL from 0.5 to 3 kHz and <or=30 dB HL at 4 kHz. Ears with low-level or absent OAEs a...

Draft ANSI S12.13 1991 Standard Evaluating the Effectiveness of Hearing Conservation Programs presents statistical protocols purportedly sensitive to temporary threshold shift (TTS) in occupational hearing conservation program (HCP) audiometric databases. Because it is well established that less TTS is found in humans with hearing loss than in those with essentially normal hearing, one might pr...

THE AUDIOMETRIC PROFILE OF YOUNG ADULTS WHO REPORT DIFFICULTY WITH SPEECH PERCEPTION IN NOISE by

OBJECTIVE To evaluate and compare the audiometric outcomes of ossicular reconstruction with titanium prosthesis and autologous material. STUDY DESIGN Retrospective cohort study. SETTING Tertiary referral center. SUBJECTS AND METHODS Audiometric results of consecutive patients who performed ossiculoplasty with titanium prosthesis (n = 43) or autologous material (n = 48), from October 2008 ...

Introduction Noise-induced hearing loss (NIHL) is a serious problem for workers and therefore for businesses. The hearing conservation program (HCP) is a set of coordinated measures to prevent the development or evolution of occupational hearing loss, which involves a continuous and dynamic process of implementation of hearing conservation routines through anticipation, recognition, evaluation,...

Background: the Random Gap Detection Test (RGDT) evaluates temporal resolution threshold. There are doubts as to whether performance in this task remains unchanged with the aging process. At the same time, there is a concern about how much the difficulties of communication experienced by elderly individuals are related to the deterioration of temporal resolution. Aim: to determine auditory temp...