Selective Canal Impairment on Video-HIT in Peripheral Vestibular Diseases
Course: #38493Level: Advanced 2 Hours 28 Reviews
The introduction of modern tools assessing otolith and ampullary reflexes in the high-frequency domain (VEMPs and video-HIT, respectively) has enabled a fast functional analysis of all inner ear receptors, offering new interpretations for end-organs and afferents abnormalities detected in patients with cochleo-vestibular pathologies. The literature review highlights how vestibular disorders could result in specific lesion patterns, including selective dysfunctions involving a single receptor. A series of patients with isolated impairment of a semicircular canal at the video-HIT will be presented and discussed. Each selective canal dysfunction will be correlated to the remaining clinical-instrumental data and related inner ear pathology. The underlying hypothetical pathomechanism accounting for each single scenario will be provided, with the help of pertinent bibliographic support.
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Learning Outcomes
- After this course, participants will be able to explain how to correlate selective canal impairment at the video-HIT with the underlying pathomechanism and related etiology according to the rest of the instrumental vestibular assessment.
- After this course, participants will be able to discuss how to differentiate an acute unilateral vestibular loss (due to vestibular neuritis) from other peripheral conditions resulting in spontaneous horizontal nystagmus and selective horizontal canal impairment at the video-HIT with the aid of other instrumental tests.
- After this course, participants will be able to describe how to recognize peripheral disorders resulting in spontaneous / positional vertical-torsional nystagmus and selective vertical canal impairment at the video-HIT with the aid of other instrumental tests.
Course created on February 24, 2023
Agenda
| 0-15 Minutes | Introduction |
| 15-45 Minutes | Selective HSC Loss |
| 45-90 Minutes | Selective PSC loss |
| 90-100 Minutes | Selective ASC Loss |
| 100-105 Minutes | Conclusions |
| 105-120 Minutes | Debate and Questions |
Reviews
28 ReviewsPresented By
Andrea Castellucci
MD
BACKGROUND: 2008: Medical Degree at the University of Bologna, Italy 2009-2014: Residency in Otolaryngology, Head & Neck Surgery at the ENT & Audiology Unit of the University of Bologna, Italy. Grown-up in the otologic and neurotologic group of the ENT Unit of the University Hospital of Bologna directed by prof. Giovanni Carlo Modugno. 2014-2015: Research Assistant at the ENT & Audiology Unit of the University of Bologna, Italy
CURRENT OCCUPATION Since 2015 ENT consultant dedicated to Otology and Neurotology at the ENT Unit of Santa Maria Nuova Hospital, AUSL – IRCCS in Reggio Emilia, Italy. Head of the Vestibular outpatient unit in Reggio Emilia, working in collaboration with Emergency and Neurology Department for the treatment of acute vestibular syndromes. Good knowledge in modern vestibular testing (calorics, skull vibration, vHIT, and VEMPs). Author and co-author of journal articles and book chapters in national and international literature. Presenter in national and international meetings.
CURRENT RESEARCH ACTIVITIES in Reggio Emilia and in collaboration with other Centers in Italy and in Switzerland: SSCD, near-dehiscence syndrome, how SSCS can mimic other pathologies and differential diagnosis o Selective canal hypofunction at the vHIT and correlation with other vestibular findings and underlying pathologies Positional DBN due to vertical canal BPPV, complete and incomplete canalith jam and the use of vHIT for differential diagnosis. Minimum stimulus strategy for HSC-BPPV diagnosis MD mimicking acute vestibular loss and differential diagnosis with vHIT and VEMPs. Dissociation between calorics and vHIT and correlation with underlying pathologies.
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