|
|
Title | Description | Subject |
26 |
|
Periodic Alternating Nystagmus and Perverted Head-shaking Nystagmus in Cerebellar Degeneration | 𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 60-yo-woman with several years of worsening imbalance, diplopia (hers was actually unrelated to cerebellar pathology [although she did have an esotropia greater at distance that was cerebellar in origin] and due... | Headshaking; Cerebellar; Jerk Nystagmus; Periodic Alternating Nystagmus |
27 |
|
Positional Downbeat Nystagmus Mimicking Anterior Canal BPPV | Although positional downbeat nystagmus (pDBN) can indicate the rare anterior canal variant of benign paroxysmal positional vertigo, central mimics are common causes of pDBN. pDBN may be seen in multiple system atrophy (MSA), or seen with posterior fossa lesions, with a common example being a stroke ... | Cerebellar; Jerk Nystagmus; Downbeat Nystagmus; Central Positional Nystagmus |
28 |
|
Rebound Nystagmus | This is a 50-yo-man who presented for dizziness and imbalance. His exam demonstrated choppy smooth pursuit and VOR suppression as well as mild gait ataxia. There was mild right-beating nystagmus in right gaze and left-beating nystagmus in left gaze without vertical gaze-evoked nystagmus. Occasionall... | Cerebellar; Jerk Nystagmus; Gaze Evoked Nystagmus; Rebound Nystagmus |
29 |
|
Sagging Eye Syndrome and Cerebellar Disease in Divergence Insufficiency | 𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 70-year-old woman who presented with diplopia at distance. Her exam demonstrated orthophoria at near with a fairly comitant 8-10 PD esotropia at distance without abduction paresis, consistent with divergence ins... | Abnormal Alignment; OMS Cerebellar; Jerk Nystagmus; Gaze Evoked Nystagmus; Divergence Insufficiency |
30 |
|
Sequelae of Cerebellar Hemorrhage - Gaze-evoked Nystagmus, Alternating Skew Deviation and Palatal Tremor | This is a 75-yo-woman presenting with a gait disorder. Two years prior, she suffered a cerebellar hemorrhage. On examination, there were typical cerebellar ocular motor signs including gaze-evoked nystagmus, choppy smooth pursuit and VOR suppression, and saccadic dysmetria. There was also an alterna... | Assessing Abnormal Alignment; Jerk Nystagmus; Gaze Evoked Nystagmus; Oculopalatal Myoclonus |
31 |
|
Square Wave Jerks and Macrosaccadic Oscillations in a Patient with a Cerebellar Tumor | This 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... | Abnormal Saccades; Square Wave Jerks |
32 |
|
Test Your Knowledge - Central and Peripheral Vestibular and Ocular Motor Signs Due to a Large Vestibular Schwannoma | Which of the following is least likely to be the correct localization or etiology given the findings seen in the video? 1) Acute right 8th cranial neuropathy 2) Right-sided vestibular schwannoma 3) Right vestibular nucleus infarction 4) Right anterior inferior cerebellar artery distribution stroke A... | Abnormal VOR; Jerk Nystagmus; Vestibular Nystagmus; Gaze Evoked Nystagmus; Bruns Nystagmus; Cerebellar OMS |
33 |
|
Test Your Knowledge: The Acute Vestibular Syndrome with Gaze-Evoked Nystagmus and Bilaterally Abnormal Head Impulse Testing Due to Middle Cerebellar Peduncle and Flocculus Hemorrhage | This is a 70-year-old woman with a history of atrial fibrillation on warfarin presenting with acute prolonged vertigo and imbalance. In addition to the findings demonstrated in the first part of the video, what else should be seen to reassure the examiner that the etiology of her vertigo is benign? ... | Abnormal VOR; Jerk Nystagmus; Acute Vestibular Syndrome; Cerebellar OMS; Gaze Evoked Nystagmus |
34 |
|
The Acute Vestibular Syndrome with Skew Deviation, Gaze-evoked Nystagmus, and Bilaterally Abnormal Head Impulse Testing Due to AICA Stroke | This is a 60-year-old man with the acute onset of prolonged vertigo and nystagmus, consistent with the acute vestibular syndrome (AVS). HINTS (Head Impulse, Nystagmus, Test of Skew) exam demonstrated a central pattern: 1) Head impulse test (HIT) was abnormal to the right and to the left. An abnormal... | Abnormal VOR-HIT; Abnormal Alignment; Skew; Jerk Nystagmus; Gaze Evoked Nystagmus; Acute Vestibular Syndrome; Seventh Nerve; OMS Pons; OMS Cerebellar |
35 |
|
Torsional Jerk Nystagmus | Presented here are 3 patients with torsional jerk nystagmus. The first patient presented with vertigo and experienced oscillopsia due to her torsional nystagmus. Pure or predominantly torsional nystagmus is highly suggestive of a central process. Her nystagmus was unidirectional and followed Alexand... | Medulla; Cerebellar; Jerk Nystagmus; Rotary Nystagmus |
36 |
|
Upbeat Nystagmus & Ocular Flutter Due to Cerebellar Pilocytic Astrocytoma | This is a 20-year-old woman who was diagnosed with a cerebellar pilocytic astrocytoma at age 10 after presenting with severe headaches and hydrocephalus. She underwent incomplete resection and radiation therapy at that time. She experienced mild vertical oscillopsia in upgaze at baseline, and increa... | Upbeat Nystagmus; Ocular Flutter |