Results 171 to 180 of about 3,502 (194)
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The Vertigo of Endolymphatic Hydrops
Archives of Otolaryngology - Head and Neck Surgery, 1967THE VERTIGO of endolymphatic hydrops is of three types: the premonitory, the critical, and the residual. In a given case premonitory vertigo may or may not occur. When it does it is a valuable harbinger of more severe trouble to come. Regarded and diagnosed at this time as a labyrinthine symptom with a potentially grave future this premonitory ...
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Effect of Fistulae on Endolymphatic Hydrops
Annals of Otology, Rhinology & Laryngology, 1975An experiment was performed on 31 guinea pigs to study the effect of fistulae of the horizontal canal, superior canal, common crus, and utricle on the course of experimentally induced endolymphatic hydrops. The effect of fistulae on corresponding parts of normal ears was also studied in an additional 17 animals.
Robert S. Kimura, Harold F. Schuknecht
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Pathogenesis of Experimental Endolymphatic Hydrops
Acta Oto-Laryngologica, 1983The protein content and the d.c. potential of the endolymph differs in the various parts of the endolymphatic space (cochlea, utricle, semicircular canals and endolymphatic sac) as also does the ion composition (chloride, potassium, sodium). 12 months after obliteration of the endolymphatic sac and duct in guinea pigs the d.c. potential falls, whereas,
C Morgenstern, N Mori, Hajime Amano
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Endolymphatic hydrops precipitated by haemodialysis
The Journal of Laryngology & Otology, 1990AbstractWe report a case of endolymphatic hydrops preceded by haemodialysis in the contralateral ear of a patient with known Menière's disease, and discuss the possible mechanism. It is suggested that the sudden decrease of plasma osmolality during haemodialysis acts as a reverse glycerol test.
D. A. Moffat +2 more
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Perilymphatic and endolymphatic pressures during endolymphatic hydrops
European Archives of Oto-Rhino-Laryngology, 2003We analysed the fluid pressure in the perilymphatic and endolymphatic spaces of the cochlea in eight guinea pigs after endolymphatic hydrops (EH) was surgically created. The control experiments were done in the opposite ears. EH was histologically confirmed after the conclusion of the pressure measurements.
F. H. H. J. Schröder +3 more
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Diagnosis of Early Endolymphatic Hydrops [PDF]
Otolaryngology–Head and Neck Surgery, 2012 ObjectiveTo evaluate ear fullness as an early symptom of endolymphatic hydrops by relating it to enhanced SP/AP ratio on electrocochleography.MethodThe study that was conducted between January 2010 and January 2011 included 2 groups. Group I (20 patients) with normal hearing and complaint of ear fullness with no eustachian dysfunction and group II (10 ...
Mona Mourad, Hani F. El Garem
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Endolymphatic Pressure in Experimental Hydrops
Archives of Otolaryngology - Head and Neck Surgery, 1987Perilymphatic and endolymphatic pressures were consecutively measured by means of a servomechanical nulling pressure system through the round window and basilar membrane one to 2.5 months after obliteration of the left endolymphatic sac and duct in seven guinea pigs.
Anita Pollak +3 more
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Diagnostic Testing For Endolymphatic Hydrops
Otolaryngologic Clinics of North America, 1997The development of a sensitive and specific diagnostic test for endolymphatic hydrops has eluded investigators for over 30 years. The absence of such a test has hampered basic and clinical research into Meniere's disease and related entities. Presently used tests are limited in their applicability because of their low sensitivity and specificity and a ...
Steven A. Telian +2 more
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Electrocochleography in Experimental Endolymphatic Hydrops
Acta Oto-Laryngologica, 1994This study investigated whether dominant negative summating potential (DNSP) is absent at all stages of induced hydrops development, including the early stages of hydrops formations. Electrocochleography (ECoG) was done 3 days to 20 weeks after obliteration of the endolymphatic sac in guinea pigs, by electrodes attached to the cochlear bony wall on the
Yoshiro Yazawa +2 more
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A Case Of Delayed Endolymphatic Hydrops
Auris Nasus Larynx, 1992A 30-year-old male with delayed endolymphatic hydrops was given a sac operation. An intradural portion of the endolymphatic sac was resected and the epithelial surface was examined under a scanning electron microscope. The epithelium showed fibrous degeneration and disappearance of the epithelial cells. Pathogenesis of degeneration of the endolymphatic
Hidetaka Kumagami, Toshiharu Sasano
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