Microvasculature of the Stria vascularis in the Round Window Area in the Rat

Tange, R. A.; Hodde, K.C.

doi:10.1159/000275776

Cited by 9 publications

(3 citation statements)

References 7 publications

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“…This high-tone region has a different vascular anatomy in comparison to the other coils of the cochlea and this vulnerable area is predisposed to inner ear traumata [8], In the middle-ear surgery HFA can be a sensitive monitor to evaluate the postopera tive results [7], This study has demonstrated the value of HFA in monitoring pre-and postoperatively the hearing function after stapes surgery. The overall mean loss in high frequencies in this study after stapes surgery was 8.7 dB SPL.…”

Section: Discussionmentioning

confidence: 94%

Pre- and Postoperative High-Frequency Audiometry in Otosclerosis

Tange¹,

Dreschler

1990

ORL

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A study was carried out to evaluate the results of stapes surgery in 53 cases of otosclerosis. The hearing function was measured pre- and postoperatively by means of conventional and high-frequency audiometry (Demlar 20K). The operative findings of the gradation of otosclerosis were compared with the pre- and postoperative audiometrical measurements. The results of this study point out that a clear relation exists between the preoperative high-tone audiogram and the gradation of otosclerosis. Stapedotomy does not influence the high-frequency threshold postoperatively. In conclusion, high-frequency audiometry can predict the state of stapes fixation in otosclerosis and this can be important in stapes surgery.

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Section: Discussionmentioning

confidence: 94%

Pre- and Postoperative High-Frequency Audiometry in Otosclerosis

Tange¹,

Dreschler

1990

ORL

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“…The method provides the opportunity to view the overall picture of the capillary structures of the cochlea and the peripheral vestibular organ. We have applied this research method for our anatomical studies on the inner ear vessels of the rat [10][11][12][13]. The rat is commonly used as an experimental animal in studies on hearing research.…”

Section: Introductionmentioning

confidence: 99%

Vascular Inner Ear Partition:A Concept for Some Forms of Sensorineural Hearing Loss and Vertigo

Tange

1998

ORL

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The results of a series of scanning electron microscopical studies were used to construct a model for the vascular pathways in the inner ear. Corrosion cast preparations of the vessels of the inner ear of the adult rat were used in this study. The inner ear is, like a hand, an end organ containing four sense organs (cochlea, saccule, utricle and the cristae ampullaris). All these specific inner ear structures have their own vascular supply. We have developed a blood flow diagram of the inner ear. This model was used for a classification of different types of ischemia in the inner ear and forms a concept for some forms of sensorineural hearing loss and vertigo. Four types of inner ear ischemia are proposed. In type I (a or b) of inner ear ischemia only the vessels of the cochlea are involved resulting in two types of hearing loss without vertigo. Type II is characterized by ischemia of a part of the cochlea and a part of the vestibular system. In type III (a or b) only the vestibular system is involved, while in type IV no blood circulation will be present in the inner ear resulting in total deafness and severe vertigo. Inner ear partition at ultramicroscopical level of these structures may be possible in the future and new imaging techniques will probably support the vascular schematic model presented in this study.

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“…Although the vascu lature of the peripheral vestibular organ has been studied by conventional light micros copy in the human, the guinea pig, rat and other animals [1][2][3][4], the detailed architec ture of the vessels in their three-dimensional relationship is ambiguous because of the limited depth of light microscopy. The co chlear vascular architecture of the rat has recently been demonstrated three-dimensionally using scanning electron microscopy (SEM) of the corrosion casts [5][6][7], In this study, the authors morphologically investi gated the normal structures of the microves sels of the crista ampullaris in a three-dimen sional way in rat.…”

Section: Introductionmentioning

confidence: 99%