title: [Acoustic impedance of the middle ear and its peculiarities in various forms of acute neurosensory hypoacusis].
abstract: Available are the results of impedance audiometry in 250 patients with acute neurosensory hypoacusis (ANH) in different forms. In ANH of traumatic, vascular, pharmacological and infectious etiology tympanogram was normal with registration of the acoustic reflex with high amplitude. The presence of the positive phenomenon of a rapid loudness increase points to impairment of the receptor system of the cochlear analyser. In allergic ANH, motility of the tympanic membrane is abnormal, in spite of the absence of serous liquid in the tympanic cavity and patency of the auditory tube, the acoustic reflex is not registered.
authors.forename: P O
authors.initials: PO
authors.lastname: Olimov
mesh_terms: D000158:Acoustic Impedance Tests; D004432:Ear, Middle / Q000503:physiopathology*; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology*; D006801:Humans
vernacular_title: Akusticheskiĭ impedans srednego ukha i ego osobennosti pri razlichnykh formakh ostroĭ neĭrosensornoĭ tugoukhosti.