Digitally programmable hearing aids employ conventional analogue circuits for changing the sound, but use a digital control circuit to alter the characteristics of the analogue circuit. These permits the flexibility
Bone anchored hearing aids (BAHA) are implantable hearing aids which works by directly stimulating inner ear via bone conduction. It is the registered trademark of bone conduction hearing aid manufactured
The complication of otitis media fall under two categories: Complication within the cranium Complications within the temporal bone Intracranial Complications These can be further subclassified into intradual and extradural complications.
Middle ear implants are: Current Devices Vibrant sound bridge Otologics (TM) middle ear transducers Esteem(R) – hearing implant Devices not currently available Soundtec (R) Direct Drive Hearing System Semi –
Otosclerosis is a localized hereditary disorder affecting endochronal bone of the otic capsule that is characterized by disordered resorption and deposition of bone. Clinical otosclerosis refers to a lesion that involves
Various sites: carotid body, glomus vagale, and glomus tympanicum tumors. Hereditary pattern: It shows autosomal dominant inheritance with variable penetrance. Endocrine activity: Even though these tumors are considered non chromaffin paragangliomas
Recruitment is a term coined by Fowler in 1937 and denotes as abnormally rapid increase in loudness noticed in cochlear type of sensorineural hearing loss. It is defined as abnormally
There are some 90 serotypes This includes multiple growths (n= 36) n=83 Other includes Corynebacterium spp. Escherichia coli, Streptacoccus faecalis, Streptococcus pyogenes Reproduce from Ref47. with permission.
There are many biochemical events as a result of tissue injury induced by inflammation. Trigger factors such as infection, inflammation, pressure and keratin lead to elaboration of variety of chemical
Prussak’s Space is the small middle ear recess and is the sub-component of lateral epitympanic space. It is named after the Russian otologist Alexander Prussak (1839-1897) . The Prussak’s space