scholarly journals Erratum to: Conductive Hearing Loss Induced by Experimental Middle-Ear Effusion in a Chinchilla Model Reveals Impaired Tympanic Membrane-Coupled Ossicular Chain Movement

2013 ◽  
Vol 14 (4) ◽  
pp. 465-465
Author(s):  
Jennifer L. Thornton ◽  
Keely M. Chevallier ◽  
Kanthaiah Koka ◽  
Sandra A. Gabbard ◽  
Daniel J. Tollin
Keyword(s):  
Hearing Loss ◽  
Tympanic Membrane ◽  
Middle Ear ◽  
Conductive Hearing Loss ◽  
Ossicular Chain ◽  
Middle Ear Effusion ◽  
Conductive Hearing ◽  
Ear Effusion

Effects of Conductive Hearing Loss on Auditory Brainstem Response

1982 ◽  
Vol 91 (3) ◽  
pp. 304-309 ◽  
Author(s):  
Therese J. McGee ◽  
Jack D. Clemis
Keyword(s):  
Hearing Loss ◽  
Middle Ear ◽  
Auditory Brainstem Response ◽  
Conductive Hearing Loss ◽  
Ossicular Chain ◽  
Auditory Brainstem ◽  
Middle Ear Effusion ◽  
Brainstem Response ◽  
Conductive Hearing ◽  
Ear Effusion

The purpose of this paper is not to propose that auditory brainstem response (ABR) be utilized for the assessment of conductive losses, but to define the effects of conductive hearing loss on the ABR when such a complication occurs. Conductive losses attenuate cochlear stimulation. Since wave V latency is inversely related to stimulus intensity, the magnitude of the conductive loss should be a predictor of the wave V latency delay. In this study, ABR wave V latencies from patients with known conductive losses due to canal occlusion, middle ear effusion, ossicular fixation and chain interruption were compared with latency values calculated from the magnitude of the loss. In those patients with occlusion of the external auditory canal and middle ear effusion, the shift of the wave V latency-intensity function correlated well with the air-bone gap. This correlation was poor for patients with ossicular chain disorders. In mixed hearing losses, the increased wave V latency due to the conductive component may totally mask an increase in latency caused by a retrocochlear component.

Hearing Impairment in Relation to Viscoelasticity of Middle Ear Effusions in Children

1988 ◽  
Vol 97 (3) ◽  
pp. 272-274 ◽  
Author(s):  
Yuichi Majima ◽  
Kazuhiko Takeuchi ◽  
Yukiyoshi Hamaguchi ◽  
Atsuhito Morishita ◽  
Keisuke Hirata ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Hearing Impairment ◽  
Middle Ear ◽  
Dynamic Viscosity ◽  
Conductive Hearing Loss ◽  
Middle Ear Effusion ◽  
Conductive Hearing ◽  
Ear Effusion ◽  
Oscillating Sphere

Both dynamic viscosity (n′) and elasticity (G′) of middle ear effusion were measured with an oscillating sphere magnetic rheometer and compared with the degree of conductive hearing loss in 65 ears of 40 children. There was a significant correlation between n′ and the magnitude of the air-bone gap at 500 and 1,000 Hz, but there was no significant correlation between G′ and the magnitude of the air-bone gap at 2,000 or 4,000 Hz. No significant correlation was noted between G′ and the magnitude of the air-bone gap at 500,1,000, 2,000, or 4,000 Hz. These results indicate that the n′ of middle ear effusion has an effect on the amount of hearing impairment at frequencies below 1,000 Hz.

Modified sleeve tympanotomy approach for removal of congenital cholesteatoma

2008 ◽  
Vol 122 (12) ◽  
pp. 1365-1367 ◽  
Author(s):  
H J Park ◽  
G H Park ◽  
J E Shin ◽  
S O Chang
Keyword(s):  
Hearing Loss ◽  
Case Report ◽  
Tympanic Membrane ◽  
Middle Ear ◽  
Conductive Hearing Loss ◽  
Tympanic Cavity ◽  
Operative Techniques ◽  
Congenital Cholesteatoma ◽  
The Right ◽  
Conductive Hearing

AbstractObjective:We present a technique which we have found useful for the management of congenital cholesteatoma extensively involving the middle ear.Case report:A five-year-old boy was presented to our department for management of a white mass on the right tympanic membrane. This congenital cholesteatoma extensively occupied the tympanic cavity. It was removed through an extended tympanotomy approach using our modified sleeve technique. The conventional tympanotomy approach was extended by gently separating the tympanic annulus from its sulcus in a circular manner. The firm attachment of the tympanic membrane at the umbo was not severed, in order to avoid lateralisation of the tympanic membrane.Conclusion:Although various operative techniques can be used, our modified sleeve tympanotomy approach provides a similarly sufficient and direct visualisation of the entire middle ear, with, theoretically, no possibility of lateralisation of the tympanic membrane and subsequent conductive hearing loss.

scholarly journals Penetrating Middle Ear Trauma: A Report of 2 Cases

2005 ◽  
Vol 84 (1) ◽  
pp. 32-35 ◽  
Author(s):  
Michael C. Neuenschwander ◽  
Ellen S. Deutsch ◽  
Anthony Cornetta ◽  
Thomas O. Willcox
Keyword(s):  
Hearing Loss ◽  
Physical Examination ◽  
Middle Ear ◽  
Conductive Hearing Loss ◽  
Penetrating Trauma ◽  
Ossicular Chain ◽  
The Other ◽  
Ear Injury ◽  
The Right ◽  
Conductive Hearing

Penetrating middle ear injury can result in hearing loss, vertigo, and facial nerve injury. We describe the cases of 2 children with penetrating trauma to the right ear that resulted in ossicular chain disruption; one injury was caused by cotton-tipped swabs and the other by a wooden matchstick. Symptoms in both children included hearing loss and otalgia; in addition, one child experienced ataxia and the other vertigo. Physical examination in both cases revealed a perforation in the posterosuperior quadrant of the tympanic membrane and visible ossicles. Audiometry identified a moderate conductive hearing loss in one child and a mild sensorineural hearing loss in the other. Both children underwent middle ear exploration and reduction of a subluxed stapes. We discuss the diagnosis, causes, and management of penetrating middle ear trauma. To reduce the morbidity associated with these traumas, otologic surgeons should act promptly and be versatile in choosing methods of repairing ossicular chain injuries.

Management of Middle Ear Effusions in Infants with Cleft Palate

1976 ◽  
Vol 85 (2_suppl) ◽  
pp. 285-288 ◽  
Author(s):  
Jack L. Paradise
Keyword(s):  
Cleft Palate ◽  
Middle Ear ◽  
Conductive Hearing Loss ◽  
Language Function ◽  
Middle Ear Effusion ◽  
Tube Insertion ◽  
Advantages And Disadvantages ◽  
Conductive Hearing ◽  
A Current ◽  
Ear Effusion

Middle ear effusion is now generally recognized as a virtually universal complication in infants with cleft palate. Such infants may therefore be assumed to experience conductive hearing loss of some degree or other throughout infancy. Hoping to prevent not only deficits in intellectual and language development, but also permanent otic and auditory handicaps, we have routinely treated such infants as early as practicable with myringotomy and tympanostomy tube insertion. Subsequently, we have repeated the operation whenever blockage or extrusion of the tubes resulted in recurrence of persistent effusion. In this manner we have been able to maintain most infants in satisfactory middle ear status most of the time. Otorrhea, however, has been a frequent complication. Preliminary findings suggest that infants managed according to this regimen may eventually develop better language function than those not receiving such management. A current study is designed to test the advantages and disadvantages that might result from deferring the initial routine myringotomy until somewhat later in infancy.

Tegmental dehiscence and brain herniation into the middle ear cleft

1991 ◽  
Vol 105 (6) ◽  
pp. 477-480 ◽  
Author(s):  
D. G. Golding-Wood ◽  
H. O. L. Williams ◽  
G. B. Brookes
Keyword(s):  
Middle Ear ◽  
Clinical Presentation ◽  
Surgical Repair ◽  
Conductive Hearing Loss ◽  
Middle Ear Effusion ◽  
Sepsis Diagnosis ◽  
Tegmen Tympani ◽  
Conductive Hearing ◽  
Middle Ear Cleft ◽  
Ear Effusion

AbstractThe tegmen tympani may occasionally be breached by herniation of the temporal lobe with or without dural cover. The clinical presentation may be obvious with CSF otorrhoea but less so with apparent middle ear effusion, CSF rhinnorrhoea, conductive hearing loss, recurrrent meningitis or intracranial sepsis. Diagnosis requires suspicion of the condition, which may be aided by radiological imaging. Surgical repair is to be recommended: various techniques are available but bone enveloped by fascia placed by subtemporal approach is preferred. The features of this problem are highlighted by four cases.

scholarly journals Isolated Incudostapedial Cholesteatomas: Unique Radiologic and Surgical Features

2020 ◽  
pp. 014556132097378
Author(s):  
Bridget MacDonald ◽  
Krishna Bommakanti ◽  
Moises Mallo ◽  
Daniela Carvalho
Keyword(s):  
Hearing Loss ◽  
Soft Tissue ◽  
Ct Scan ◽  
Middle Ear ◽  
Conductive Hearing Loss ◽  
Soft Tissue Mass ◽  
Ossicular Chain ◽  
Ct Scans ◽  
Tissue Mass ◽  
Conductive Hearing

Objectives: Congenital cholesteatomas originate from epithelial tissue present within the middle ear in patients with an intact tympanic membrane, no history of otologic surgery, otorrhea, or tympanic membrane perforation. They are diagnosed by a pearl-like lesion on otoscopy and computed tomography (CT) scan showing an expansile soft-tissue mass. We describe a series of patients with no prior otologic history presenting with progressive unilateral conductive hearing loss and normal otoscopy. The CT scans showed ossicular erosion without obvious soft-tissue mass. Surgery confirmed incudostapedial erosion found to be cholesteatoma. In this study, we characterize the clinical course of patients diagnosed with isolated incudostapedial cholesteatoma (IIC) and review possible pathologic mechanisms. Methods: Retrospective review of IIC cases treated by the Department of Pediatric Otolaryngology, Rady Children’s Hospital, San Diego, 2014 to 2020. Data included patient demographics, clinical features, imaging, surgical findings, and audiologic data. Results: Five patients were diagnosed with IIC (3 [60%] female; mean age at presentation 10.7 years [range 5.5-16.0]). All patients presented with postlingual unilateral conductive hearing loss and normal otoscopy without any past otologic history; delay in diagnosis ranged from 4 months to several years. The CT scans showed ossicular chain erosion with an absent long process of the incus and/or stapes superstructure. All patients underwent middle ear exploration, revealing a thin layer of cholesteatoma in the incudostapedial region, confirmed by histopathology. Mean preoperative speech reception threshold was 55 dB and improved to a mean of 31 dB in the 4 patients who underwent ossicular chain reconstruction. Conclusion: Isolated incudostapedial cholesteatoma should be included as a possible etiology in pediatric patients with insidious onset of unilateral conductive hearing loss with normal otoscopy, unremarkable otologic history, and a CT scan showing ossicular abnormality/disruption without notable middle ear mass. These patients should be counseled preoperatively regarding the possibility of cholesteatoma and should undergo middle ear exploration with possible ossiculoplasty.

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