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https://www.readbyqxmd.com/read/28045835/normative-wideband-reflectance-equivalent-admittance-at-the-tympanic-membrane-and-acoustic-stapedius-reflex-threshold-in-adults
#1
M Patrick Feeney, Douglas H Keefe, Lisa L Hunter, Denis F Fitzpatrick, Angela C Garinis, Daniel B Putterman, Garnett P McMillan
OBJECTIVES: Wideband acoustic immittance (WAI) measures such as pressure reflectance, parameterized by absorbance and group delay, equivalent admittance at the tympanic membrane (TM), and acoustic stapedius reflex threshold (ASRT) describe middle ear function across a wide frequency range, compared with traditional tests employing a single frequency. The objective of this study was to obtain normative data using these tests for a group of normal-hearing adults and investigate test-retest reliability using a longitudinal design...
December 30, 2016: Ear and Hearing
https://www.readbyqxmd.com/read/27995276/seasonal-differences-of-tympanogram-and-middle-ear-findings-in-children
#2
S Knopke, A Böttcher, P Chadha, H Olze, F Bast
BACKGROUND: It is a known fact that bacterial or viral acute otitis media occurs more frequently in the winter months. Only a few older studies on seasonal differences in middle ear findings are available. These studies are based solely on tympanography, without correlation to intraoperative middle ear findings. This study addresses the question of whether seasonal differences can be found in the preoperative tympanogram and in the corresponding intraoperative findings in children with chronic middle ear problems...
December 19, 2016: HNO
https://www.readbyqxmd.com/read/27957560/auditory-and-nonauditory-effects-of-ultrasonic-scaler-use-and-its-role-in-the-development-of-permanent-hearing-loss
#3
Aditi Chopra, Betsy S Thomas, Kishan Mohan, Karthik Sivaraman
PURPOSE: To evaluate the negative auditory and non-auditory effects developed immediately after using ultrasonic scalers and their potential role in the development of permanent hearing loss. MATERIALS AND METHODS: The auditory functions of 60 dental clinicians were evaluated with the pure tone audiometry test (PTA), tympanogram and the otoacoustic emission test (OAE) before and immediately after using ultrasonic scalers. The paired t-test was used to evaluate the difference in the pre- and post-exposure recordings for all three tests...
2016: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/27942601/high-frequency-tympanometry-1-000-hz-for-neonates-with-normal-and-abnormal-transient-evoked-otoacoustic-emissions
#4
Maryam Emadi, Mohammad Rezaei, Morteza Hamidi Nahrani, Masoud Bolandi
BACKGROUND AND OBJECTIVES: This paper aimed at evaluating the characteristics of high-frequency (1,000 Hz) acoustic admittance (ya) for the neonates with transient evoked otoacoustic emissions (TEOAE) as either pass or refer group. SUBJECTS AND METHODS: Using a 1,000 Hz probe tone, 297neonates (152 male, 145 female aged 0-104 days old) were evaluated. Tympanometric parameters admittance value at +200 dapa, middle ear admittance, and tympanometric peak pressure were calculated for each tympanogram...
December 2016: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/27904919/-seasonal-differences-of-tympanogram-and-middle-ear-findings-in-children-german-version
#5
S Knopke, A Böttcher, P Chadha, H Olze, F Bast
BACKGROUND: It is a known fact that bacterial or viral acute otitis media occurs more frequently in the winter months. Only a few older studies on seasonal differences in middle ear findings are available. These studies are based solely on tympanography, without correlation to intraoperative middle ear findings. This study addresses the question of whether seasonal differences can be found in the preoperative tympanogram and in the corresponding intraoperative findings in children with chronic middle ear problems...
November 30, 2016: HNO
https://www.readbyqxmd.com/read/27873023/therapeutic-efficacy-of-azithromycin-and-acetylcysteine-in-chronic-otitis-media-with-effusion
#6
Irena Babić, Tomislav Baudoin, Robert Trotić, Vladimir Bedeković
Otitis media with effusion (OME) is a common disease in childhood. There is no consensus on the optimal therapeutic option for OME. Considering the known efficacy of acetylcysteine (AC) and azithromycin (AZ) in the treatment of middle ear mucosa, the aim of the study was to assess their efficacy in the management of chronic OME. The study included 90 children with OME, both ears. They are divided into three groups of 30 children. Group 1 (AC) patients were treated with acetylcysteine per os, 3 × 100 mg, for 3 weeks; group 2 (AZ) with body weight adjusted dose of azithromycin for 3 days; and group 3 (AC + AZ) with a combination of acetylcysteine and azithromycin at doses described above...
November 21, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27790571/assessment-of-function-of-eustachian-tube-in-oral-submucous-fibrosis-a-tympanometric-study
#7
Alagiri Chandran, Nalini Aswath
INTRODUCTION: Oral Submucous fibrosis (OSMF) is a chronic insidious disease of oral mucosa that occurs due to areca-nut chewing, consumption of chillies, autoimmunity and genetic predisposition. The disease starts with burning sensation and inability to tolerate spicy foods with gradual reduction in mouth opening due to fibrosis of the oral mucosa. The extension of fibrosis into the naso pharynx leads to reduction in hearing efficiency. It is a potentially malignant lesion and can transform into oral cancer...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27761737/middle-ear-adenoma-with-neuroendocrine-differentiation-a%C3%A2-pediatric-case-report
#8
Elisabeth Sterrer, Franz Windisch, Kurt Frey, Klaus Rettensteiner, Benjamin Loader
BACKGROUND: Middle ear adenoma with neuroendocrine differentiation (MEA-ND), also known as carcinoid tumor of the middle ear, is an extremely rare neoplasm, especially when located within the tympanic cavity. To the best of our knowledge, this represents the first pediatric case of a MEA-ND described in Europe. Excluding the present case, only three other pediatric cases of this disease have been published globally. CASE REPORT: We report on a 15-year-old female patient who presented with conductive hearing loss of the right ear...
October 19, 2016: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/27627838/tympanometric-measurements-in-conscious-sheep-a-diagnostic-tool-for-pre-clinical-middle-ear-implant-studies
#9
Friederike Pohl, Gerrit Paasche, Thomas Lenarz, Robert Schuon
OBJECTIVE: To investigate and establish the use of tympanometry in conscious sheep to provide a means of objective assessment of tympanic membrane integrity, middle ear ventilation and functioning of the Eustachian tube (ET). DESIGN: After conditioning the sheep for four weeks, tympanometric measurements at 226 Hz were carried out weekly for 13 weeks. Before measurements, the external ear canal had been cleaned. Resultant curves were classified according to human reference values...
January 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/27577883/middle-ear-ventilation-status-postoperatively-after-translabyrinthine-resection-of-vestibular-schwannoma-with-mastoid-obliteration-and-eustachian-tube-occlusion-is-the-eustachian-tube-enough-to-ventilate-the-middle-ear-without-the-mastoid-air-cell-system
#10
James Belyea, Brandon Wickens, Manohar Bance
BACKGROUND: Gas pressure balance is essential for maintaining normal middle ear function. The mucosal surfaces of the middle ear, the mastoid air cell system (MACS), and the Eustachian tube (ET) play a critical role in this process; however, the extent that each of these factors contributes to overall middle ear ventilation is unknown. The objective of this study was to determine if the ET alone can maintain normal middle ear pressure without the MACS. To do this, we reviewed subjects who had their MACS completely removed with translabyrinthine (TL) surgery for vestibular schwannoma...
August 30, 2016: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/27563311/tympanometric-findings-among-children-with-adenoid-hypertrophy-in-port-harcourt-nigeria
#11
Chibuike Nwosu, Mathilda Uju Ibekwe, Lucky Obukowho Onotai
Introduction. Adenoid hypertrophy (AH) is a common childhood disorder. Adenoid plays a significant role in the pathogenesis of otitis media with effusion (OME). The aim of this study is to critically appraise the tympanometric finding among children with adenoid hypertrophy in Port Harcourt, Nigeria. Methodology. A Prospective, controlled study carried out among newly diagnosed cases of adenoid hypertrophy at the ENT clinic of the UPTH, between November 2014 and June 2015. Tympanometry was done on each child and each ear was considerably studied as a single entity...
2016: International Journal of Otolaryngology
https://www.readbyqxmd.com/read/27551851/clinical-functional-and-surgical-findings-in-chronic-bilateral-otitis-media-with-effusion-in-childhood
#12
Svetlana Diacova, Thomas J McDonald, Ion Ababii
We conducted a prospective, observational study over a 3-year period to compare the clinical, functional, and surgical findings in children with chronic bilateral otitis media with effusion who underwent one of three different types of treatment. Our study population was made up of 150 patients-79 boys and 71 girls aged 24 to 84 months-who were randomly assigned to one of the three treatment groups of 50 patients each. One group was treated with myringotomy, tympanostomy tube insertion, and adenoidectomy (T+A group); another with a combination of physical conservative treatment and adenoidectomy (P+A group); and the third with physical conservative treatment alone (P-only group)...
August 2016: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/27518207/air-bone-gaps-contribute-to-functional-hearing-preservation-in-cochlear-implantation
#13
Jameson K Mattingly, Kristin M Uhler, Stephen P Cass
OBJECTIVE: To examine the incidence and effect of postoperative air-bone gaps in subjects who received cochlear implants for the purpose of hearing preservation. STUDY DESIGN: Prospective, multicenter, nonrandomized, repeated measures within subject design. SETTING: Ten tertiary care institutions. PATIENTS: Fifty adults participating in a multicenter clinical trial of the Cochlear Nucleus Hybrid implant system. INTERVENTION(S): Cochlear implantation with Hybrid L24 electrode...
October 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27517667/wideband-acoustic-immittance-normative-study-and-test-retest-reliability-of-tympanometric-measurements-in-adults
#14
Xiao-Ming Sun
PURPOSE: The purpose of this study was to present normative data of tympanometric measurements of wideband acoustic immittance and to characterize wideband tympanograms. METHOD: Data were collected in 84 young adults with strictly defined normal hearing and middle ear status. Energy absorbance (EA) was measured using clicks for 1/12-octave frequencies (0.236 to 8 kHz), with the ear canal air pressure systematically varied (+200 to -300 daPa). In 40 ears, 7 consecutive trials and a trial of clinical 226-Hz acoustic admittance (Ya) tympanometry followed...
August 1, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/27488333/balloon-dilation-for-eustachian-tube-dysfunction-systematic-review
#15
S Y Hwang, S Kok, J Walton
BACKGROUND: Eustachian tube dysfunction is a disorder for which there are limited medical and surgical treatments. Recently, eustachian tube balloon dilation has been proposed as a potential solution. METHOD: A systematic literature review was performed. Abstracts were selected for relevance, and pooled data analysis and qualitative analysis was conducted. RESULTS: Nine prospective studies, describing 713 eustachian tube balloon dilations in 474 patients (aged 18-86 years), were identified...
July 2016: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/27459818/-detection-of-the-presence-of-middle-ear-effusion-with-wideband-absorbance-tympanometry
#16
Hidenobu Taiji, Jin Kanzaki
This study evaluated the ability of wideband absorbance (AB) to predict the presence of middle-ear effusion (MEE) in ears with a flat (type B) 226 Hz tympanogram (TG). AB measures were obtained in a no MEE group of 8 ears with a flat TG and a MEE group of 19 ears also with a flat TG. AB was significantly small at frequencies 2 and 4 kHz in the MEE group than in the no MEE group. Based on our results, it appeared that AB could detect MEE with higher specificity than conventional tympanometry. The presence or absence of MEE could be distinguished based on the average AB using 1, 2, and 4 kHz, with 40% as the cutoff point...
May 2016: Nihon Jibiinkoka Gakkai Kaiho
https://www.readbyqxmd.com/read/27395069/predictive-factors-for-the-appearance-of-myringosclerosis-after-myringotomy-with-ventilation-tube-placement-randomized-study
#17
Carla Branco, Daniel Monteiro, João Paço
Myringotomy with the insertion of ventilation tubes is the most frequent surgical procedure performed in children, and the appearance of myringosclerosis is one of its most frequent long-term complications. The objective of this study is to identify clinical factors and technique variations that may have a relation with the appearance of myringosclerosis, after tube insertion. Patients submitted to myringotomy with transtympanic short-term tube insertion were studied in a longitudinal prospective and analytical cohort study with the prospective randomized open, blinded endpoint (PROBE) methodology, to study the influence of the location of myringotomy (anterior-inferior quadrant or posterior-inferior), directions of the incision (radial or non-radial) and aspiration or not of the middle ear...
July 9, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27368466/wideband-reflectance-in-down-syndrome
#18
Jordana Costa Soares, Juliana Granja Urosas, Karenina Santos Calarga, Tathiany Silva Pichelli, Suelly Cecília Olivan Limongi, Navid Shahnaz, Renata Mota Mamede Carvallo
OBJECTIVE: Children with Down syndrome (DS) have a high incidence of middle ear disorders and congenital abnormalities of the external, middle and inner ear. Energy reflectance (ER), a wideband acoustic immittance (WAI) measurement parameter, can measure the sound energy reflected or absorbed in the ear canal over a wider range of frequencies more efficiently and faster than conventional single-tone 226 Hz tympanometry. The aim of the present study was to compare the WAI measurements of children with DS with those of typically developing, normal-hearing children according to their tympanometric findings...
August 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27368439/the-effect-of-the-leukotriene-antagonist-pranlukast-on-pediatric-acute-otitis-media
#19
Yoshihisa Nakamura, Yuki Hamajima, Motohiko Suzuki, Shinichi Esaki, Makoto Yokota, Masanori Oshika, Ippei Takagi, Keiko Yasui, Naoya Miyamoto, Kazuko Sugiyama, Meiho Nakayama, Shingo Murakami
OBJECTIVE: Conventional treatment for acute otitis media mainly targets bacteria with antibiotics, neglecting to control for mediators of inflammation. Mediators of inflammation, such as leukotrienes, have been identified in patients with acute otitis media (AOM) or subsequent secretory otitis media (SOM). They can cause functional eustachian tube dysfunction or increase mucous in the middle ear, causing persistent SOM following AOM. The objective of the present study was to evaluate whether or not administration of pranlukast, a widely used leukotriene C4, D4, and E4 antagonist, together with antibiotics could inhibit the progression to SOM...
August 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27340636/prevalence-and-audiological-characteristics-of-auditory-neuropathy-spectrum-disorder-in-pediatric-population-a-retrospective-study
#20
S S Vignesh, V Jaya, A Muraleedharan
Auditory neuropathy spectrum disorder (ANSD) is a type of hearing disorder which is challenging for assessment and rehabilitation. This disorder has been studied over a decade and prevalence of the disorder is variable. The study aimed at estimating the prevalence and audiological characteristics of ANSD in children. A retrospective study was conducted from the medical records of pediatric patients evaluated at Rajiv Gandhi Government General Hospital and Madras Medical College, Chennai to estimate the prevalence of ANSD...
June 2016: Indian Journal of Otolaryngology and Head and Neck Surgery
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