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The Supine Superior Semicircular Canal Dehiscence Test.

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Title: The Supine Superior Semicircular Canal Dehiscence Test.
Authors: Hoppes, Carrie W.1 carrie.w.hoppes.mil@mail.mil, Lambert, Karen H.2, Zalewski, Chris3, Pinto, Robin4, Burrows, Holly4, McCasline, Devin5
Source: American Journal of Audiology. Sep2021, Vol. 30, p475-480. 6p. 1 Color Photograph, 2 Charts, 2 Graphs.
Subject Terms: Tinnitus, Evoked potentials (Electrophysiology), Dizziness, Superior semicircular canal dehiscence syndrome, Valsalva's maneuver, Nystagmus, Semicircular canals, Supine position, Vestibular apparatus
Abstract: Purpose: The purpose of this clinical focus article is to describe a new method for assessment of superior semicircular canal dehiscence by laying the patient supine during Valsalva-induced nystagmus testing. Method: The traditional Valsalva-induced nystagmus test is described, followed by a new method for assessment of superior semicircular dehiscence conducted by laying the patient supine during testing. A case study is presented to illustrate this new testing technique known as the Supine Superior Semicircular Canal Dehiscence Test. Results: It is hypothesized that during Valsalva-induced nystagmus testing performed in the upright, seated position, the dura mater could potentially seal the superior semicircular canal fistula, thereby concealing a defect in the bony labyrinth and yielding a false-negative test. To circumvent this, the patient should be placed in the supine position during Valsalva-induced nystagmus testing in order to prevent the dura mater from inadvertently sealing itself against the petrous portion of the temporal bone. The Supine Superior Semicircular Canal Dehiscence Test may reveal the defect in the bony labyrinth and improve the sensitivity of the Valsalva-induced nystagmus test. Conclusions: The Supine Superior Semicircular Canal Dehiscence Test may be more sensitive for identifying superior semicircular canal dehiscence in patients with traditional symptoms and a negative Valsalva-induced nystagmus test in the seated position. While a case study is presented to illustrate the potential benefits of including the Supine Superior Semicircular Canal Dehiscence Test in the battery of diagnostic tests, further research is needed in larger samples. [ABSTRACT FROM AUTHOR]
Copyright of American Journal of Audiology is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Education Research Complete
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PubType: Academic Journal
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  Data: The Supine Superior Semicircular Canal Dehiscence Test.
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  Data: <searchLink fieldCode="AR" term="%22Hoppes%2C+Carrie+W%2E%22">Hoppes, Carrie W.</searchLink><relatesTo>1</relatesTo><i> carrie.w.hoppes.mil@mail.mil</i><br /><searchLink fieldCode="AR" term="%22Lambert%2C+Karen+H%2E%22">Lambert, Karen H.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Zalewski%2C+Chris%22">Zalewski, Chris</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Pinto%2C+Robin%22">Pinto, Robin</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Burrows%2C+Holly%22">Burrows, Holly</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22McCasline%2C+Devin%22">McCasline, Devin</searchLink><relatesTo>5</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22American+Journal+of+Audiology%22">American Journal of Audiology</searchLink>. Sep2021, Vol. 30, p475-480. 6p. 1 Color Photograph, 2 Charts, 2 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Tinnitus%22">Tinnitus</searchLink><br /><searchLink fieldCode="DE" term="%22Evoked+potentials+%28Electrophysiology%29%22">Evoked potentials (Electrophysiology)</searchLink><br /><searchLink fieldCode="DE" term="%22Dizziness%22">Dizziness</searchLink><br /><searchLink fieldCode="DE" term="%22Superior+semicircular+canal+dehiscence+syndrome%22">Superior semicircular canal dehiscence syndrome</searchLink><br /><searchLink fieldCode="DE" term="%22Valsalva's+maneuver%22">Valsalva's maneuver</searchLink><br /><searchLink fieldCode="DE" term="%22Nystagmus%22">Nystagmus</searchLink><br /><searchLink fieldCode="DE" term="%22Semicircular+canals%22">Semicircular canals</searchLink><br /><searchLink fieldCode="DE" term="%22Supine+position%22">Supine position</searchLink><br /><searchLink fieldCode="DE" term="%22Vestibular+apparatus%22">Vestibular apparatus</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Purpose: The purpose of this clinical focus article is to describe a new method for assessment of superior semicircular canal dehiscence by laying the patient supine during Valsalva-induced nystagmus testing. Method: The traditional Valsalva-induced nystagmus test is described, followed by a new method for assessment of superior semicircular dehiscence conducted by laying the patient supine during testing. A case study is presented to illustrate this new testing technique known as the Supine Superior Semicircular Canal Dehiscence Test. Results: It is hypothesized that during Valsalva-induced nystagmus testing performed in the upright, seated position, the dura mater could potentially seal the superior semicircular canal fistula, thereby concealing a defect in the bony labyrinth and yielding a false-negative test. To circumvent this, the patient should be placed in the supine position during Valsalva-induced nystagmus testing in order to prevent the dura mater from inadvertently sealing itself against the petrous portion of the temporal bone. The Supine Superior Semicircular Canal Dehiscence Test may reveal the defect in the bony labyrinth and improve the sensitivity of the Valsalva-induced nystagmus test. Conclusions: The Supine Superior Semicircular Canal Dehiscence Test may be more sensitive for identifying superior semicircular canal dehiscence in patients with traditional symptoms and a negative Valsalva-induced nystagmus test in the seated position. While a case study is presented to illustrate the potential benefits of including the Supine Superior Semicircular Canal Dehiscence Test in the battery of diagnostic tests, further research is needed in larger samples. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of American Journal of Audiology is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1044/2021_AJA-21-00011
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 6
        StartPage: 475
    Subjects:
      – SubjectFull: Tinnitus
        Type: general
      – SubjectFull: Evoked potentials (Electrophysiology)
        Type: general
      – SubjectFull: Dizziness
        Type: general
      – SubjectFull: Superior semicircular canal dehiscence syndrome
        Type: general
      – SubjectFull: Valsalva's maneuver
        Type: general
      – SubjectFull: Nystagmus
        Type: general
      – SubjectFull: Semicircular canals
        Type: general
      – SubjectFull: Supine position
        Type: general
      – SubjectFull: Vestibular apparatus
        Type: general
    Titles:
      – TitleFull: The Supine Superior Semicircular Canal Dehiscence Test.
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            NameFull: Hoppes, Carrie W.
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            NameFull: Lambert, Karen H.
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            NameFull: Zalewski, Chris
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            NameFull: Burrows, Holly
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            – D: 01
              M: 09
              Text: Sep2021
              Type: published
              Y: 2021
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              Value: 30
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