ArticleOtology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology2013
Spontaneous plugging of the horizontal semicircular canal with reversible canal dysfunction and recovery of vestibular evoked myogenic potentials.
Article in Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 28 citations in OpenAlex.
- Ocular Movement Examination in Peripheral Vestibular Disorders as a Tool to Improve Diagnosis: A Literature Review.Medicina (Kaunas, Lithuania) · 2024Review
- Direction-fixed positional nystagmus following head-roll testing: how is it related with a vestibular pathology?Journal of otology · 2021Article
- The Video Head Impulse Test in the acute stage of posterior canal benign paroxysmal positional vertigo.Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale · 2021Article
- Horizontal semicircular canal jam: Two new cases and possible mechanisms.Laryngoscope investigative otolaryngology · 2020Article
- Feasibility of Using the Video-Head Impulse Test to Detect the Involved Canal in Benign Paroxysmal Positional Vertigo Presenting With Positional Downbeat Nystagmus.Frontiers in neurology · 2020Article
- Advances in the diagnosis and treatment of benign paroxysmal positional vertigo.Experimental and therapeutic medicine · 2017Article
- Intra-Attack Vestibuloocular Reflex Changes in Ménière's Disease.Case reports in otolaryngology · 2016Article
- Diagnosing Stroke in Acute Vertigo: The HINTS Family of Eye Movement Tests and the Future of the "Eye ECG".Seminars in neurology · 2015Review
- Input-output functions of vestibular afferent responses to air-conducted clicks in rats.Journal of the Association for Research in Otolaryngology : JARO · 2014Article
- Reply to the Commentary on Luis et al. "Spontaneous plugging of the horizontal semicircular canal with reversible canal dysfunction and recovery of vestibular evoked myogenic potentials".Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2014Article
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Authors and funding
6 authors at 3 institutions in 5 countries.
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No grant is acknowledged in the PubMed record.
Abstract
objectiveTo evaluate the clinical pathophysiology of oculomotor changes in a patient presenting with a spontaneous semicircular horizontal canal plug. PATIENT: A 42-year-old man with acute spontaneous vertigo with spinning and persistent left-horizontal nystagmus, intensity but not direction dependent on head orientation with respect to gravity, indicating a benign paroxysmal positional vertigo due to otoconia causing a plug in the horizontal semicircular canal.
interventionElectrophysiological and video-oculographic testing; vestibular rehabilitation.
main outcome measuresCervical and ocular vestibular evoked myogenic potentials (VEMPs); video head impulse testing.
resultsThe video head-impulse test revealed an eye velocity cutoff at 80°/s in the time interval from 40 to 90 ms after initiation of head impulses to the right. This normalized within 2 days after liberatory maneuvers, documenting for the first time a reversible deficiency of the cupular-endolymph high-frequency system dynamics. Cervical and ocular vestibular myogenic potentials were absent during stimulation of the affected side before the liberatory maneuvers but normalized within 30 to 80 days.
conclusionThis case is special in 4 respects: 1) nystagmus intensity, but not direction, was dependent on head orientation with respect to gravity, indicating a horizontal canal plug; 2) VEMPs were asymmetrical before liberatory maneuvers; 3) VEMPs recovered after Day 30; and 4) video head-impulse test asymmetry recovered. These observations challenge the common belief that VEMPs are evoked by otolith stimulation only. Instead, the assumption of a reversible canal dysfunction by a plug offers a more plausible explanation for all effects.
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