Katherine D Heidenreich

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Involvement of the superior semicircular canal (SSC) in benign paroxysmal positional vertigo (BPPV) is rare. SSC BPPV is distinguished from the more common posterior semicircular canal (PSC) variant by the pattern of nystagmus triggered by the Dix-Hallpike position: down-beating torsional nystagmus in SSC BPPV versus up-beating torsional nystagmus in PSC(More)
OBJECTIVES To describe the rationale, intraoperative details, and histopathologic findings discovered when treating an unusual case of apogeotropic horizontal canal positional vertigo with a transmastoid labyrinthectomy. PATIENT A single case report. INTERVENTION Therapeutic. MAIN OUTCOME MEASURES Resolution of apogeotropic nystagmus and improvement(More)
Importance Superior canal dehiscence syndrome (SCDS) is an increasingly recognized cause of hearing loss and vestibular symptoms, but the etiology of this condition remains unknown. Objective To describe 7 cases of SCDS across 3 families. Design, Setting, and Participants This retrospective case series included 7 patients from 3 different families(More)
Canal switch is a complication following canalith repositioning procedure (CRP) for posterior canal benign paroxysmal positional vertigo (BPPV). Instead of being returned to the utricle, the loose otoconia migrate into the superior or horizontal semicircular canal. Patients remain symptomatic, and treatment can be ineffective unless the switch is recognized(More)
In this article, the present state of the art with respect to audiovestibular testing for Meniere's disease (MD) is reviewed. There is no gold standard for MD diagnosis, and the classic dictum is that even the "best" tests yield positive results in only two-thirds of patients with MD. Still, we advocate the use and further investigation of advanced(More)
OBJECTIVE To determine the electrocochleographic characteristics of ears with superior semicircular canal dehiscence (SSCD) and to examine its use for intraoperative monitoring in canal occlusion procedures. STUDY DESIGN Case series. SETTING Academic medical center. PATIENTS Thirty-three patients (45 ears) had clinical and computed tomographic(More)
OBJECTIVE Document a case of bilateral otosclerosis with coexisting bilateral superior semicircular canal dehiscence syndrome and the treatment of hearing loss in this setting. PATIENT A 33-year-old woman presented with bilateral mixed hearing loss; worse in the left ear. This was gradual in onset, and she denied dizziness. Computerized tomographic scan(More)
We present a patient with positive head thrust test (HTT) and video-oculography (VOG) findings suggestive of active lateral semicircular canal (LSCC) benign paroxysmal positional vertigo (BPPV). This patient was seen in a tertiary vestibular clinic for episodic vertigo. He exhibited robust corrective refixation saccades on HTT to the right and evidence of(More)
Superior semicircular canal dehiscence (SSCD) syndrome has been called the great otologic mimicker because its presentation overlaps with otosclerosis, Meniere's disease, perilymphatic fistula, and patulous eustachian tube. A valuable examination finding that can help distinguish SSCD syndrome from other pathologic conditions is the presence of Hennebert's(More)
We present the unusual case of a competitive swimmer with cervicogenic dizziness manifesting as vertigo while she was surface swimming. This patient complained of brief and episodic room-spinning vertigo consistently associated with swimming the freestyle stroke and was referred to an otolaryngology clinic for evaluation. She did not have significant(More)