Distribution Pattern of Blood in the Inner Ear Following Spontaneous Subarachnoid Haemorrhage

Holden, H. B.; Schuknecht, Harold F.

doi:10.1017/s0022215100068833

Cited by 63 publications

(18 citation statements)

References 7 publications

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“…Yamana et al (2000) suggested that gliosis and thickening of cranial nerve VIII resulting from hemosiderin deposition may disturb cochlear circulation and cause cochlear hearing loss in combination with retrocochlear hearing loss. A patent cochlear aqueduct (39) or internal auditory canal (40) could feasibly result in circulation of hemosiderin-laden CSF within the cochlea (19,40,41) resulting in disruption of either the pressure differential within the cochlea (42) or the ionic composition within the cochlea (40). A patent cochlear aqueduct (39) or internal auditory canal (40) could feasibly result in circulation of hemosiderin-laden CSF within the cochlea (19,40,41) resulting in disruption of either the pressure differential within the cochlea (42) or the ionic composition within the cochlea (40).…”

Section: Discussionmentioning

confidence: 99%

Auditory Profile in Superficial Siderosis of the Central Nervous System

Sydlowski¹,

Lévy²,

Hanks³

et al. 2013

Otology &Amp; Neurotology

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We observed significant audiometric findings in all participants. SSCN variably and pathologically targets the auditory system without regard for duration of disorder. A long asymptomatic phase and lack of predictive relationship between duration and severity of hearing loss makes suspicion of SSCN based solely on audiometric battery difficult; however, asymmetric hearing loss exceeding expectations, particularly with history of head trauma or previous neurosurgical procedure, should raise a red flag and trigger further medical evaluation including MRI. Diagnosis of SSCN may alter expectations for audiologic prognosis and is a critical component for comprehensive management of SSCN patients.

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Section: Discussionmentioning

confidence: 99%

Auditory Profile in Superficial Siderosis of the Central Nervous System

Sydlowski¹,

Lévy²,

Hanks³

et al. 2013

Otology &Amp; Neurotology

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“…This indicates that the soft tissue can respond defensively to infections [29]. It has been shown that blood cells and fluid can pass the fibrous tissue mesh inside the perilymphatic duct [7,26]. Holden and Schuknecht [7] demonstrated that the cochlear aqueduct is patent for cells like erythrocytes.…”

Section: Discussionmentioning

confidence: 99%

“…It has been shown that blood cells and fluid can pass the fibrous tissue mesh inside the perilymphatic duct [7,26]. Holden and Schuknecht [7] demonstrated that the cochlear aqueduct is patent for cells like erythrocytes. In our material we saw erythrocytes in the cochlear aqueducts of 17 temporal bones (13.6% of our overall collection); indicating patency.…”

Section: Discussionmentioning

confidence: 99%

The cochlear aqueduct in pediatric temporal bones

Bachor¹,

Byahatti

Karmody

1997

Eur Arch Otorhinolaryngol

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The cochlear aqueduct is a bony channel which contains the fibrous periotic duct and connects the perilymphatic space of the basal turn of the cochlea with the subarachnoid space of the posterior cranial cavity. Previous histological studies suggested that patency depended on age, whereas a more recent study showed no statistical correlation between age and patency. To clarify patency in pediatric cochlear aqueducts, we selected 21 temporal bones from 12 infants and children, varying in age from birth to 9 years, in which the cochlear aqueduct was fully visible on one histological section. Photographs were taken for documentation and the length and width of the orifice of the external aperture of the aqueduct at the scala tympani were measured and followed to the internal aperture at the subarachnoid space. The lumen of the duct was examined for mononucleated cells, blood cells and fibrous tissue. Measurements revealed that the mean length of the cochlear aqueduct was 4.6 mm (range, 2.4-10.7 mm), mean width of the external aperture was 484 microm (range, 225-869 microm), and mean width of the internal aperture was 1293 microm (range, 699-2344 microm). The mean diameter of the narrowest part (isthmus) was 151 microm (range, 75-244 microm). In all temporal bones the cochlear aqueduct was patent, with one exception. This latter temporal bone was from a 2-month-old girl with multiple intralabyrinthine anomalies, with the missing cochlear aqueduct believed to be due to an aplasia. Our results support prior measurements of the cochlear aqueduct and demonstrate a short and patent cochlear aqueduct in newborns. With growth, a significant increasing length of the duct was found.

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“…Fluid exchange and even passage of blood cells can take place in newborn infants, in children and at least in some adults. In studies of the distribution pattern of blood in the inner ear following subarachnoid haemorrhage, HOLDEN & SCHUKNECHT (8) found that wide cochlear aqueducts (mean diameter orifice) allowed passage of erythrocytes to the scala tympani, whereas narrow ones (mean value 109 urn) did not.…”

Section: Discussionmentioning

confidence: 99%

Patency of the Cochlear Aqueduct

Muren¹,

Vignaud²,

Wilbrand³

et al. 1985

Acta Radiologica. Diagnosis

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The patency of the cochlear aqueduct is discussed against the background of radioanatomic studies of 225 plastic casts of temporal bone specimens and additional experimental and clinical observations. The occasional presence of a wide venous channel running parallel with the cochlear aqueduct, as well as the existence of up to three accompanying venous channels can simulate a pathologically wide cochlear aqueduct radiographically. This could constitute a diagnostic pitfall in the absence of other clinical and radiographic signs of malformation.

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Distribution Pattern of Blood in the Inner Ear Following Spontaneous Subarachnoid Haemorrhage

Cited by 63 publications

References 7 publications

Auditory Profile in Superficial Siderosis of the Central Nervous System

Auditory Profile in Superficial Siderosis of the Central Nervous System

The cochlear aqueduct in pediatric temporal bones

Patency of the Cochlear Aqueduct

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