Tympanometry and acoustic reflectometry in ears with chronic retraction without effusion

Kemaloğlu, Yusuf Kemal; Beder, Levent Bekir; Şener, Tufan; Göksu, Nebil

doi:10.1016/s0165-5876(00)00367-0

Cited by 13 publications

(7 citation statements)

References 21 publications

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“…Fishpool et al [16], for example, have shown that tympanometry has a 27% false negative rate (unable to detect cases with true OME) in children with confirmed OME using myringotomy and a 16% false positive rate (incorrectly identifying cases as having OME); these findings have been confirmed by several investigators [17,18]. This is in agreement with tympanometric findings reported previously for older children with DS [19].…”

supporting

confidence: 74%

Wideband energy reflectance findings in presence of normal tympanogram in children with Down's syndrome

Kaf¹

2011

International Journal of Pediatric Otorhinolaryngology

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supporting

confidence: 74%

Wideband energy reflectance findings in presence of normal tympanogram in children with Down's syndrome

Kaf¹

2011

International Journal of Pediatric Otorhinolaryngology

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“…In Syed et al the common sign seen by otoscopic examination was dull eardrum (72.18%), while in our study the commonest was retraction of tympanic membrane [15]. The most common type of tympanometry results seen among children with OME in our study was type B (92%), Kemaloğlu et al [27] and Pan et al [28] reported that B-type tympanogram positive predictive values were 96% and 92.57% respectively. The overall diagnostic accuracy of type B tympanogram for predicting middle ear effusion was 100% in the group with parental suspicion of hearing loss giving a sensitivity of 100%, which was higher than the group whose parents were not suspicious of hearing loss.…”

Section: Discussionsupporting

confidence: 44%

“…Meanwhile, most cases showed mild degree of hearing loss (54.8%). Thompson in 2008, Martines et al in 2010 and 2011 revealed that the worse conductive hearing loss among children with OME was of moderate degree, which constitute up to 10% compared with 20-35% having mild degree hearing loss [15,27,31]. These results suggests that the degree of conductive hearing loss among cases with OME cannot be worse than a moderate hearing loss as the skull vibrate at intensities greater than 60-70 dB hearing level allowing the signal to go straight to the inner ear; anything greater than this is considered to be mixed hearing loss [31].…”

Section: Discussionmentioning

confidence: 99%

Otitis Media with Effusion in Children: A Follow up Study in West Baghdad, Iraq

A¹

2014

Commun Disord Deaf Stud Hearing Aids

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Objective: To study the clinical, audiological and radiological characteristics as well as treatment outcome of children less than 12 years old suffered from Otitis Media with Effusion (OME) from West Baghdad, Iraq. Materials and Methods:This is a follow up study performed upon 180 child under 12 years old, diagnosed having OME by clinical, audiological and radiological means, they were treated in Al-Ramadi and Al-Fallujah General Hospitals drained from West Baghdad and Al-Anbar Governorate, during the period from May 2010 to July 2012. The data obtained from the parents, clinical examination and investigations like Pure Tone Audiometry (PTA), tympanometry and lateral soft tissue x-ray of the neck had been done. The treatment outcome studied after follow up for six months.Results: There were 54.4% boys and 45.6% girls. The main presenting symptom was hearing impairment (brought by family) (47.2%) and the main presenting sign was retraction of tympanic membrane (91.7%), the mean amount of hearing loss by PTA was 22.6 ± 5.5 dB. In 92.2% of patients tympanometry was type B. The size of the adenoid measured by Adenoid\Nasopharyngeal ratio was located mainly on Grade 3+ (43.3%). All the patients were given medical treatment, 61.1% of them responded. Patients that failed to response to medical treatment underwent different modalities of surgical means represented mainly by myringotomy and adenotonsillectomy. Conclusion:There was significant correlation between the size of adenoid and the type of tympanogram and hearing threshold. The treatment was mainly medical, while surgical means if indicated they were myringotomy accompanied mainly with adenotonsillectomy.

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“…By anatomical microscopy (Leica S6D), OM was detected in mice as young as 11 days old ( Figure 1B ). The mutant mice showed severe middle ear effusion, sometimes accompanied by tympanic membrane retraction ( Figure 1D ) resembling human OM pathology [35], [36]. OM was detected in all mutant mice over 11 days of age, in contrast to the wild-type control mice.…”

Section: Resultsmentioning

confidence: 84%

Sh3pxd2b Mice Are a Model for Craniofacial Dysmorphology and Otitis Media

et al. 2011

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Craniofacial defects that occur through gene mutation during development increase vulnerability to eustachian tube dysfunction. These defects can lead to an increased incidence of otitis media. We examined the effects of a mutation in the Sh3pxd2b gene (Sh3pxd2bnee) on the progression of otitis media and hearing impairment at various developmental stages. We found that all mice that had the Sh3pxd2bnee mutation went on to develop craniofacial dysmorphologies and subsequently otitis media, by as early as 11 days of age. We found noteworthy changes in cilia and goblet cells of the middle ear mucosa in Sh3pxd2bnee mutant mice using scanning electronic microscopy. By measuring craniofacial dimensions, we determined for the first time in an animal model that this mouse has altered eustachian tube morphology consistent with a more horizontal position of the eustachian tube. All mutants were found to have hearing impairment. Expression of TNF-α and TLR2, which correlates with inflammation in otitis media, was up-regulated in the ears of mutant mice when examined by immunohistochemistry and semi-quantitative RT-PCR. The mouse model with a mutation in the Sh3pxd2b gene (Sh3pxd2bnee) mirrors craniofacial dysmorphology and otitis media in humans.

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Tympanometry and acoustic reflectometry in ears with chronic retraction without effusion

Cited by 13 publications

References 21 publications

Wideband energy reflectance findings in presence of normal tympanogram in children with Down's syndrome

Wideband energy reflectance findings in presence of normal tympanogram in children with Down's syndrome

Otitis Media with Effusion in Children: A Follow up Study in West Baghdad, Iraq

Sh3pxd2b Mice Are a Model for Craniofacial Dysmorphology and Otitis Media

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