The utriculo‐endolymphatic valve

Bast, Theodore H.

doi:10.1002/ar.1090400106

Cited by 50 publications

(18 citation statements)

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“…At the point described however a rupture of this wall into the perilymph space appears to have occurred. No interference can be demonstrated with the patency of the communicating pathw-ays between the utricle, saccule, and ductus endolymphaticus, and the utricular fold (the possible valve-like action of which has been emphasized by Bast [11]) is seen in its normal position. The state of development of the pneumatic and marrow, spaces, the inflammatory changes in the tympanum, and the dilatation of the saccullarcavity are shown in fig.…”

Section: Left Temporal Bonementioning

confidence: 95%

Observations on the Pathology of Ménière's Syndrome

Hallpike

Cairns

1938

Proceedings of the Royal Society of Medicine

203

113

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IT is the purpose of this paper to describe-as is believed, for the first time-the pathological changes in the temporal bones in two cases of Meniere's syndrome. In both death occurred shortly after operation for section of the 8th nerve. For the purposes of the present paper, the surgical factors concerned in the operative failure of these cases will be dealt with only in so far as they are related to the interpretation of the histological changes which are now to be described. Their detailed consideration will be reserved for a further publication.

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Section: Left Temporal Bonementioning

confidence: 95%

Observations on the Pathology of Ménière's Syndrome

Hallpike

Cairns

1938

Proceedings of the Royal Society of Medicine

203

113

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“…Konishi69 observed that the utriculo‐endolymphatic (UE) valve opens for several days after hydrops formation begins and then closes due to the compression caused by increasing hydrops. The UE valve exists at the junction between the utricle and utricular duct 70. Because the endolymph can easily flow in the direction from the utricular duct to the utricle but not in the reverse direction, the role of the UE valve is to maintain pressure in the utricle and semicircular canals.…”

Section: Hydrops In the Inner Earmentioning

confidence: 99%

Potential application of ocular and cervical vestibular‐evoked myogenic potentials in meniere's disease: A review

Young

2012

The Laryngoscope

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By stimulating the ear with air-conducted sound or bone-conducted vibration stimuli, vestibular-evoked myogenic potential (VEMP) can be recorded on the contracted neck muscles, termed cervical VEMP (cVEMP), and on the extraocular muscles, termed ocular VEMP (oVEMP). These two electrophysiological tests expand the test battery for clinicians to explore the dynamic otolithic function, adding a potential usefulness to the sacculocollic reflex and vestibulo-ocular reflex, respectively. The inner ear test battery, including audiometry, and cVEMP, oVEMP and caloric tests, is designed for complete evaluation of the inner ear function, namely, the cochlea, saccule, utricle, and semicircular canals, respectively. Using this test battery to study the localization and prevalence of hydrops formation reveals that the declining function in the cochlea, saccule, utricle, and semicircular canals mimics the declining sequence of hydrops formation in temporal bone studies. This study reviewed the physiological results in Meniere's patients via the inner ear test battery, especially the potential application of the oVEMP and cVEMP tests, to correlate with the histopathological findings of Meniere's disease.

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“…The protective role of the valve of Bast (that closes the utricular duct) explains this unusual situation: decreasing pressure in the whole endolymphatic system collapses the ductus reuniens and causes closure of the valve. 18 19 20 21 It is plausible that the reopening of the valve of Bast after the repair of the fistula may have let the remaining air bubbles t diffuse within the cochlea and induce total auditory loss.…”

Section: Discussionmentioning

confidence: 99%

Intralabyrinthine Penetrating Ventilation Tube with Preservation of Hearing: An Unusual Clinical Situation

Raoelina

Elzière

Michel

et al. 2014

Int. Arch. Otorhinolaryngol.

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Introduction Traumatic perilymphatic fistula is not a rare event with regards to sport activities or traffic accident. However, iatrogenic damage to the inner ear can occur following the common use of grommets and ventilation tube insertion. Objectives To report an unusual case of insertion of aeration tube into the vestibule trough the stapes footplate. Resumed Report A 62-year-old woman experienced iatrogenic penetration into the vestibule from a ventilation tube inserted for retraction pocket management. The event was misdiagnosed both by the surgeon and by the emergency room physicians, leading to delay in the management. However, preservation of the hearing function lasted for 2 weeks prior to deafness, thanks to the valve of Bast, which preserved the cochlear fluid. Conclusion This case gives us the opportunity to stress the need for systematic clinical examination of traumatic injury to the ear and to recommend performing multiplanar millimetric computed tomography scan with accurate interpretation. Traumatic injuries should be referred to a dedicated traumatic emergency referral center.

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The utriculo‐endolymphatic valve

Abstract: This description of a structure which, for the want of a better name, I have called the utriculo-endolymphatic valve, is based on the study of a large number of serial sections and reconstructions of human fetuses. Of the twenty-five

Cited by 50 publications

References 0 publications

Observations on the Pathology of Ménière's Syndrome

Observations on the Pathology of Ménière's Syndrome

Potential application of ocular and cervical vestibular‐evoked myogenic potentials in meniere's disease: A review

Intralabyrinthine Penetrating Ventilation Tube with Preservation of Hearing: An Unusual Clinical Situation

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