You've searched: Collection: "ehsl_novel_gold"
201 - 225 of 232
Number of results to display per page
TitleDescriptionType
201 Pressure testing for superior canal dehiscence syndromeSuperior semicircular canal dehiscence syndrome (SCDS) is caused by a third mobile window in the inner ear. This allows for transmission of sound or pressure to the superior canal. Tragal compression and/or glottic and pinched nose Valsalva may provoke vertigo and vertical-torsional nystagmus in t...
202 Demonstration of HINTS examination in a normal subjectIn the acute vestibular syndrome - consisting of acute prolonged vertigo, spontaneous nystagmus, imbalance, nausea/vomiting, head motion intolerance which is typically due to vestibular neuritis or posterior fossa stroke - a 3 step test of ocular motor and vestibular function known as HINTS, has hig...Image/MovingImage
203 Posterior Canal - BPPV: Epley and Semont maneuversEpley/canalith repositioning maneuver (CRP) To treat right posterior canal (PC)-BPPV (each position maintained for at least 30 seconds or until nystagmus and/or vertigo cease): • First the patient is placed in the long-sitting position • The head is rotated 45 degrees to the right • Then the p...Image/MovingImage
204 Posterior canal BPPV treated with Semont maneuverThis is a patient with left posterior canal (PC) benign paroxysmal positional vertigo (BPPV), and upbeat-torsional (towards the left ear) nystagmus was provoked by left Dix-Hallpike maneuver and left side-lying maneuver. This video demonstrates treatment of her left PC BPPV with the Semont maneuver....
205 Posterior canal BPPV pre- and post-Epley maneuverThis is a patient with typical right posterior canal benign paroxysmal positional vertigo (BPPV), which was provoked by the Dix-Hallpike maneuver. When the patient was moved into the right Dix-Hallpike maneuver, after a brief latency, upbeat-torsional (towards the lowermost or affected [right] ear) ...
206 Dix-Hallpike maneuver in posterior BPPV with reversal of nystagmus on sitting upThis is a patient with typical posterior canal (PC) benign paroxysmal positional vertigo (BPPV), which is provoked by the Dix-Hallpike maneuver. When the patient is moved into the right Dix-Hallpike maneuver, after a brief latency, upbeat-torsional (towards the lowermost or affected [right] ear) nys...
207 Abnormal Head Impulse Test in Vestibular Neuritis 1 Week After OnsetThis is a 25-year-old woman who experienced the acute vestibular syndrome due to right-sided vestibular neuritis 1 week prior to this video. Left-beating nystagmus (LBN) was only noted in left gaze, but with fixation-removed, there was clear LBN in primary position that increased with head-shaking a...
208 Saccadic pathways in the brainstem and cerebellum & mechanism for saccadic dysmetria in Wallenberg syndrome - Abnormal function of the brainstem/cerebellar saccadic pathways with a left Wallenberg syndromeThe end result of a lesion involving the climbing fibers within the left lateral medulla is deficient rightward saccades (contralesional hypometric saccades), and over-active leftward saccades (ipsilesional hypermetric saccades), and ipsilesional ocular lateropulsion given this baseline imbalance. M...
209 Central positional vertigo and nystagmus in a posterior fossa tumorThis is a 30-year old woman who presented with positional vertigo and vomiting following a concussion related to a car accident 3 months prior. She was initially diagnosed with posterior canal (PC) benign paroxysmal positional vertigo (BPPV), although there was no improvement with Epley maneuvers. T...
210 Approach to the Ocular Motor and Vestibular History and ExaminationHistory and examination of ocular motor and vestibular.
211 Gaze-evoked and centripetal nystagmus in Creutzfeldt-Jakob diseaseThis is a 65-year-old woman who experienced a progressive cerebellopathy over several months. Initially, she presented with mild gait imbalance and positional vertigo, and there was only apogeotropic positional nystagmus (more pronounced in supine roll test compared to Dix-Hallpike) with a very slig...
212 Reversal of vertical nystagmus with convergence in anti-DPPX encephalitisThis is a man who initially presented with spontaneous upbeat and torsional nystagmus, which led to the diagnosis of anti-DPPX encephalitis (for further details on this patient's course and for a video of his nystagmus, see reference 1). Over 6-12 months, his spontaneous (mainly) upbeat nystagmus (U...
213 Hyperventilation-induced downbeat nystagmus in a cerebellar disorderThis is a 45-year-old woman with a chronic progressive cerebellopathy of unclear etiology (worsening over at least 10 years) characterized by gait and limb ataxia, gaze-evoked nystagmus, saccadic pursuit and vestibulo-ocular reflex suppression, an esotropia greater at distance, along with very mild ...
214 Vibration-induced nystagmus in a patient with vestibular neuritisThis is a 60-year-old man who experienced the sudden onset of vertigo, oscillopsia, imbalance, nausea and vomiting. He was seen in the emergency department within hours and had spontaneous right-beating (RBN) and torsional (top poles toward right ear) nystagmus that was unidirectional in all directi...
215 Downbeat (perverted) head shaking nystagmus in a patient with spontaneous torsional nystagmusThis is a 75-year-old woman with vascular risk factors who experienced abrupt onset imbalance and dizziness. Symptoms were maximal at onset, and she denied progression over 6 months. Clinically, it was felt that she had suffered a stroke, although an MRI one months later demonstrated an unremarkable...
216 Bilateral pseudo-abducens palsies due to midbrain strokeThis is a man who suffered right>left midbrain strokes due to endocarditis complaining of ptosis and inability to move his eyes as well as hallucinations (peduncular hallucinosis). There was a presumed nuclear 3rd nerve palsy on the right (i.e., responsible for his mydriatic pupil, absent supra- and...Image/MovingImage
217 Pseudo-spontaneous nystagmus and bow and lean test in horizontal canal BPPVThis is a 70-year-old woman presenting to the Emergency Department with positional vertigo that was determined to be due to the apogeotropic variant of right horizontal canal (HC) benign paroxysmal positional vertigo (BPPV). When her head is in a neutral position with the head in axis with the trunk...
218 Vertical vergence and fusional amplitudeEssential information on vertical fusional vergences.
219 Square wave jerks and macrosaccadic oscillations in a patient with a cerebellar tumorThis is a 40-year-old man who developed severe headaches, confusion, and gait imbalance which led to neuroimaging which demonstrated a midline cerebellar mass with compression of the fourth ventricle and obstructive hydrocephalus. He underwent a suboccipital craniectomy for resection of the mass, an...
220 The utriculo-ocular motor pathways - physiologic and pathologic ocular tilt reaction: Physiologic ocular tilt reaction (OTR) (Figure 1)A skew deviation is a non-paralytic vertical ocular misalignment that is due to imbalance in the utriculo-ocular motor pathways. While vestibular jerk nystagmus is a consequence of static semicircular canal pathway imbalance (e.g., left-beating nystagmus due to acute right vestibular hypofunction fr...
221 Saccadic hypermetria and ipsipulsion (behind closed eyelids and with vertical saccades)This is a 40-year-old woman who experienced oscillopsia and vertical diplopia, due to spontaneous torsional nystagmus and a skew deviation (right hypotropia), respectively. The symptom onset was 7 months prior to these videos. MRI demonstrated ill-defined T2 and FLAIR hyperintensity signal changes i...
222 Paroxysmal Ocular Tilt ReactionThis is a 60-year-old woman who 2 years prior experienced a left sided hypertensive hemorrhagic stroke, resulting in right hemiparesis, dysarthria and vertical diplopia. The initial vertical diplopia resolved completely and about 6 months following the hemorrhage the patient began to experience many...
223 The utriculo-ocular motor pathways - physiologic and pathologic ocular tilt reaction: OTR Diagram Pathologic EOMs Labelled (Figure 3)A skew deviation is a non-paralytic vertical ocular misalignment that is due to imbalance in the utriculo-ocular motor pathways. While vestibular jerk nystagmus is a consequence of static semicircular canal pathway imbalance (e.g., left-beating nystagmus due to acute right vestibular hypofunction fr...
224 The utriculo-ocular motor pathways - physiologic and pathologic ocular tilt reaction: Pathologic OTR (Figure 2)A skew deviation is a non-paralytic vertical ocular misalignment that is due to imbalance in the utriculo-ocular motor pathways. While vestibular jerk nystagmus is a consequence of static semicircular canal pathway imbalance (e.g., left-beating nystagmus due to acute right vestibular hypofunction fr...
225 Alternating hypertropias - bilateral 4th nerve palsies and alternating skew deviationSeen here are two patients with alternating hypertropias. The first is a 70-year-old woman with a diagnosis of cerebellar ataxia, neuropathy, vestibular areflexia syndrome (CANVAS). In the video, both spontaneous downbeat nystagmus (DBN) and gaze-evoked nystagmus (GEN) are apparent, in addition to a...
201 - 225 of 232