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40 Cards in this Set
- Front
- Back
What are the 5 questions you MUST ASK? |
1. Functional/oranic 2. Level? 3. Focal or diffuse? 4. Mass or non-mass? 5. Cause? |
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What is agnosia? |
1. Inability to interpret sensations and hence to recognize things 2. Occipitotemporal border |
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What is apraxia? |
1. Inability to perform particular actions 2. Frontal and parietal lobes
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What is aphasia? |
1. Inability to understand or express speech 2. Frontal and temporal lobes |
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What are the dominant hemisphere deficit signs? |
1. Dysphasia 2. Dysgraphia 3. Auditory agnosia 4. Word agnosia |
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What is the non-dominant hemisphere in charge of? |
1. Emotion 2. Awareness of body schemes and spatial relationships 3. Nonsyntactic components of language 4. Prosody |
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What are the findings of non-dominant hemisphere lesions? |
1. Extinction 2. inattention---blindness 3. Depression |
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What is usually the first sign of Parkinson's? |
1. Loss of smell |
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How do you test the optic nerve? |
1. Visual fields 2. Fundoscopy |
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What is the function of CNs II, IV, and VI? |
1. Moves eyes 2. III constricts pupil |
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What leads to bitemporal hemianopia? |
1. Pituitary enlargement |
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What is the MCC of visual extinction? |
1. Contralateral parietal lesions |
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What is amaurosis fugax? |
1. Blindness that comes and goes 2. Due to microemboli in ICA 3. "Cherry red spot" inside of fovea |
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What is a scotoma? |
1. Blind spot 2. Black=retinal disease 3. Blank spot=optic nerve lesion |
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What is the MCC of pailledema? How does it usually present? |
1. ICP 2. Impedes retinal venous return 3. Usually presents as a blind spot |
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What are the ssx of acute anterior optic neuritis? What is the progression? |
1. Physician sees swollen disc, patient is blind 2. Usually unilateral 3. Sudden visual loss progresses over 1-2 weeks, recovery 4-6w later |
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What is acute retrobulbar neuritis? Progression? |
1. Physician sees nothing 2. Patient sees nothing 3. Optic nerve issue 4. Visual loss is sudden, painless, and does not improve |
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What is optic atrophy? Progression? |
1. Small, pale sharply marginated optic disc 2. Denotes old nerve injury 3. Blindness in one eye that resolves after 4-6 w |
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With what diseases is optic atrophy associated? |
1. MS 2. Optic neuritis 3. Papilledema |
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What controls construction of the pupil? |
1. Pretectal nucleus---> Edinger-Westphal nucleus---> ciliary ganglion---> iris 2. Parasympathetic |
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What dilates the pupil? |
1. Sympathetic hypothalamic cervical cord pathway at T2 2. Superior cervical ganglion, postganglionic fibers along CIA to pupillary-dilator muscles |
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What is anisocoria? |
1. Unequal pupils in low, ambient, and bright lights 2. Test with swinging flashlight test 3. Often disappears by 2nd exam |
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What are the ssx of Horner's? Cause? |
1. Ptosis 2. Miosis 3. Anhydrosis 4. Medullary infarction, T1 root injury, Pancoast tumor, carotid atherosclerosis |
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What is Wallenberg's syndrome? |
1. Infarction of lateral medullary tegmentum 2. Facial pain 3. Ataxia 4. Horner's syndrome 5. Dysphagia, dysarthria |
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What is the MC form of brainstem stroke from a thrombosis of PICA? |
1. Wallenberg syndrome |
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What are Argyll Robertson pupils? |
1. Accommodate but won't react |
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What is iridoplegia? MCC? |
1. No reopens or accommodation in left eye 2. MCC: atropinic agents: scopolamine, eye drops |
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What leads to complete CN III palsy? |
1. Compression (aneurysm) 2. Down and out eye 3. Ptosis of upper lid 4. Pupil dilated and unreactive to light |
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What is the MCC of incomplete CN III palsy? |
1. DM---- central of nerve, not periphery |
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What are the ssx of CN IV palsy? |
1. Reduced downward and inward gaze 2. Head tilt away from affected eye |
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What are the ssx of CN VI palsy? |
1. Loss of lateral deviation of eye |
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What is intranuclear ophthalmoplegia? |
1. Lesion of medial longitudianal fasciclus between C3 and C6 2. Eyes do not cross over |
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What is Parinaud syndrome? |
1. Defective up and down gaze 2. Seen with pineal tumors, women in 20s/30s with MS, older pts. following stroke of upper brainstem |
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What are saccades? |
1. Brain gets bored, eyes move 2. Helps track movements in space |
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What is jerk nystagmus? What does it indicate? |
1. Phases of unequal velocity 2. Unidirectional 3. Indicates vestibular or brainstem abnormality |
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What is pendular nystagmus? What does it indicate? |
1. Phases of equal velocity 2. Bidirectional 3. Indicates a brainstem abnormality |
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Why should you test for optokinetic nystagmus? |
1. Temporal-parietal-occipital lesions 2. Visual acuity in infants beginning at 4-6 mos. 3. Visual function in patients with depresses consciousness 4. Provide a clue to presence of psychogenic visual loss (if present, patient not blind) |
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When does afferent pupillary defect occur? |
1. When patient is blind and cannot sense light 2. Optic nerve issue |
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What is Adie's Homes syndrome? |
1. Tonic pupil in presence of decreased DTRs in lower extremities |
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When is ideomotor apraxia more complicated? |
1. In sequential activities |