An acoustic stimulus is presented to the external auditory canal; energy is transferred from the ear canal through the middle ear, some of which is reflected and some absorbed by the tympanic membrane and external ear structures. The premise behind the immittance instrumentation used to measure the acoustic reflex is the ability to accurately measure changes in reflected energy occurring from s...

introduction: chronic otitis media (com), a persistent and durable inflammation and infection of the middle ear, is a common disorder. alterations in the contralateral ear in sufferers have been observed in recent years. because only a few studies have been reported in this area, we performed this study in order to assess alterations in the contralateral ear of patients with com.   materials an...

OBJECTIVES To evaluate the accuracy of spectral gradient acoustic reflectometry (SGAR) in children aged 6 to 24 months, and to compare SGAR with tympanometry. DESIGN Comparison of diagnostic tests. SETTING Inner-city primary care center in Pittsburgh, Pennsylvania. PARTICIPANTS A total of 786 healthy children aged 6 to 24 months. MAIN OUTCOME MEASURES Test characteristics of SGAR (sensi...

Children with human immunodeficiency virus (HIV) infection are more likely to have hearing loss and are more susceptible to middle ear infections. The purpose of this study was to quantitatively measure middle ear function, using tympanometry, in perinatally HIV-infected (PHIV) and HIV-uninfected children living in Cape Town, South Africa.Hearing-related health questionnaire data were obtained ...

OBJECTIVE (1) The diagnostic accuracy of tympanometry in detecting fluid in the middle ear space in children with otitis media with effusion by comparing its findings with those of myringotomies. (2) Identify the age group most commonly affected by OME. METHODS This prospective study was conducted at the Department of ENT& Head and Neck Surgery, Postgraduate Medical Institute Hayatabad Medica...

BACKGROUND Early intervention to reduce the effects of congenital hearing loss requires accurate description of hearing loss. In pediatric audiology, a cross-check principle is used to compare behavioral and physiological tests. PURPOSE The purpose of this study was to investigate the correspondence of visual reinforcement audiometry (VRA) minimal response levels (MRLs), otoacoustic emissions...

introduction: the aim of this study was to evaluate audiological outcomes following adenoidectomy by the classical method and by endoscopically-assisted adenoidectomy using a powered instrument (microdebrider).   materials and methods: this study was conducted in a tertiary care center. it included 40 patients divided into two equal groups of 20 each. group-a patients underwent classical adenoi...

Objective: The aim of the study was to find effects gender and ear difference multi-frequency tympanometry in Indian young adult population.Method: A total 30 individuals include 15 males females with normal hearing were taken for study. Resonant frequency F45 determined both ears all compared.Result: test results showed that mean resonant have no significant left right ears. Females slightly b...