Search for dissertations about: "Middle ear pressure"

Showing result 1 - 5 of 12 swedish dissertations containing the words Middle ear pressure.

  1. 1. Middle Ear Pressure; A New Method for Continuous Direct Measurements

    University dissertation from Department of Otorhinolaryngology, Lund University

    Author : Bo Tideholm; [2000]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Otorhinolaryngology; man; physiology; sleep; posture; pressure; patulous Eustachian tube; middle ear; Ear; audiology; auditive system and speech; Otorinolaryngologi; audiologi; hörsel- och talorganen;

    Abstract : Disturbances in the pressure homeostasis of the middle ear (ME) system cause a pressure gradient across the tympanic membrane lessen the effectiveness of sound transmission and may be associated to development of chronic ME disease. An equipment for continuous direct pressure measurements was developed and was found to be accurate, base-line stabile and portable. READ MORE

  2. 2. Influence of middle ear pressure changes on labyrinthine hydrodynamics and hearing physiology

    University dissertation from Department of Otorhinolaryngology, Lund University

    Author : Konrad Konradsson; [1999]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; auditive system and speech; audiology; Pressure; Audiometry; Cats; Animal; Cochlea; Cochlear aqueduct; Ear; Eustachian tube; Hearing; Otorinolaryngologi; Human; Labyrinth; Otorhinolaryngology; Meniere s disease; audiologi; hörsel- och talorganen;

    Abstract : Results from experimental studies, as well as clinical studies, are used to elucidate the effects of ambient pressure changes on cochlear hydrodynamics and function. The perilymph pressure changes and the pressure release effects of the cochlear aqueduct (CA) and Eustachian tube (ET) in cats exposed to hypobaric pressure are elucidated. READ MORE

  3. 3. On Pressure Regulation of the Middle Ear

    University dissertation from Department of Otorhinolaryngology, Lund University

    Author : Marianne Brattmo; [2010]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Chronic otitis media; Sniffing behaviour; Tubal opening; gas diffusion; Meniere s disease; Attic cholesteatoma; Chronic central perforation; Tympanic membrane; Continuous measurement; Middle ear pressure; Eustachian tube;

    Abstract : The middle ear (ME) pressure is regulated by gas diffusion over the ME mucosa and pressure equalizations via the Eustachian tube (ET). Disturbance in the regulation of ME pressure is believed to contribute to the development of chronic ear diseases. READ MORE

  4. 4. The linear and nonlinear biomechanics of the middle ear

    University dissertation from Department of Otorhinolaryngology, Lund University

    Author : Thomas Wright; Martin Lesser; Viktor Beryuk; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biotechnology; biomechanics; middle ear models; ossicular chain; Bioteknik; TECHNOLOGY Bioengineering; TEKNIKVETENSKAP Bioteknik;

    Abstract : This thesis addresses the biomechanics of the human middle ear, that part of the auditory system which converts sound pressure waves in air to fluid pressure waves in the cochlea. The middle ear's mechanism is analysed in four papers, three main and one supporting; in the main papers the middle ear is treated as a multi-particle, multi-rigid body ensemble possessing a variable number of degrees of freedom depending upon the case being investigated. READ MORE

  5. 5. Distribution and Effects of NO and CO in the Human Upper Respiratory Tract

    University dissertation from Otorhinolaryngology (Lund)

    Author : Jens Andersson; [2002]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; mykologi; virologi; bakteriologi; Mikrobiologi; mycology; transplantation; Microbiology; bacteriology; virology; serologi; Immunologi; serology; Otorhinolaryngology; audiology; auditive system and speech; Otorinolaryngologi; audiologi; hörsel- och talorganen; Immunology; sinus; upper respiratory tract infection; nose; nitric oxide; neutrophil migration; middle ear; hemin; flow cytometry; allergy; carbon monoxide;

    Abstract : Mucosal inflammation and airway hyperreactivity are regulated by hundreds of different mediators. The recent discovery of gaseous mediators, produced and active within the airways, opens new possibilities for identification of therapeutic targets and ways to monitor airway inflammation. READ MORE