scholarly journals Effect of transducer placements on thresholds in ears with an abnormal ear canal and severe conductive hearing loss

2021 ◽  
Author(s):  
Tadashi Nishimura ◽  
Hiroshi Hosoi ◽  
Osamu Saito ◽  
Ryota Shimokura ◽  
Chihiro Morimoto ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Conductive Hearing Loss ◽  
Ear Canal ◽  
Conductive Hearing

Hearing loss

2018 ◽  
Author(s):  
James Ramsden
Keyword(s):  
Hearing Loss ◽  
Facial Nerve ◽  
Middle Ear ◽  
Cranial Nerve ◽  
Nerve Palsy ◽  
Facial Nerve Palsy ◽  
Conductive Hearing Loss ◽  
Ear Canal ◽  
Eighth Cranial Nerve ◽  
Conductive Hearing

Hearing loss must be divided into conductive hearing loss (CHL) and sensorineural hearing loss (SNHL). CHL is caused by sound not reaching the cochlear (abnormality of the ear canal, tympanic membrane, middle ear, or ossicles), whereas SNHL is a condition affecting the cochlear or auditory (eighth cranial) nerve. Hearing loss may be accompanied by other cardinal signs of ear disease, such as pain or discharge from the ear, vertigo, facial nerve palsy, and tinnitus, which guide the diagnosis. This chapter describes the approach to the patient with hearing loss.

Comparison of Ear-Canal Reflectance and Umbo Velocity in Patients with Conductive Hearing Loss

2011 ◽  
Author(s):  
Gabrielle R. Merchant ◽  
Hideko H. Nakajima ◽  
Dominic V. Pisano ◽  
Christof Röösli ◽  
Mohamad A. Hamade ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Conductive Hearing Loss ◽  
Ear Canal ◽  
Conductive Hearing

Ear Malformation and Hearing Loss in Patients with Treacher Collins Syndrome

1993 ◽  
Vol 30 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Gaylene Pron ◽  
Cheryl Galloway ◽  
Derek Armstrong ◽  
Jeffrey Posnick
Keyword(s):  
Hearing Loss ◽  
Inner Ear ◽  
Middle Ear ◽  
Conductive Hearing Loss ◽  
Treacher Collins Syndrome ◽  
External Ear ◽  
Ear Canal ◽  
Ear Malformations ◽  
Asymmetric Hearing Loss ◽  
Conductive Hearing

Although the hearing loss of patients with Treacher Collins syndrome is well documented, few studies have reported jointly on their hearing loss and ear pathology. This paper reports on the hearing loss and computerized tomography (CT) assessments of ear malformations in a large pediatric series of patients with Treacher Collins. Of the 29 subjects assessed by the Craniofacial Program between 1986 and 1990, paired audiologic and complete CT assessments were available for 23 subjects. The external ear canal abnormalities were largely symmetric, either bilaterally stenotic or atretic. In most cases, the middle ear cavity was bilaterally hypoplastic and dysmorphic, and ossicles were symmetrically dysmorphic or missing. Inner ear structures were normal in all patients. The majority of patients had a unilateral or bilateral moderate or greater degree of hearing loss and almost half had an asymmetric hearing loss. The hearing loss of all subjects was conductive, except for three whose loss was bilateral mixed. Two types of bilaterally symmetric hearing loss configurations, flat and reverse sloping, were noted. Conductive hearing loss in patients with Treacher Collins is mainly attributable to their middle ear malformations, which are similar for those of patients with malformed or missing ossicles.

scholarly journals Comparison of Ear-Canal Reflectance and Umbo Velocity in Patients With Conductive Hearing Loss: A Preliminary Study

2012 ◽  
Vol 33 (1) ◽  
pp. 35-43 ◽  
Author(s):  
Hideko H. Nakajima ◽  
Dominic V. Pisano ◽  
Christof Roosli ◽  
Mohamad A. Hamade ◽  
Gabrielle R. Merchant ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Conductive Hearing Loss ◽  
Ear Canal ◽  
Preliminary Study ◽  
Conductive Hearing

scholarly journals Unusual case of unilateral conductive hearing loss: chronic lymphocytic leukaemia

2018 ◽  
pp. bcr-2017-223444
Author(s):  
Amelia Leigh Davis ◽  
Shane Gangatharan ◽  
Jafri Kuthubutheen
Keyword(s):  
Hearing Loss ◽  
Differential Diagnosis ◽  
Chronic Lymphocytic Leukaemia ◽  
Unusual Case ◽  
Lymphocytic Leukaemia ◽  
Conductive Hearing Loss ◽  
Cutaneous Lesion ◽  
External Ear ◽  
Ear Canal ◽  
Conductive Hearing

This presentation reports a novel case of chronic lymphocytic leukaemia (CLL), presenting with an early cutaneous lesion within the external auditory canal, in a patient being assessed for conductive hearing loss. It has previously been reported that infiltrative CLL can involve the head and neck; however, isolated external ear canal involvement is rare. Given that the incidence of CLL in Australia is rising, this case highlights the importance of considering CLL as a differential diagnosis for presentations of unilateral conductive hearing loss.

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