Neuro Block 2 Cram Flashcards
What age group is associated with Multiple Sensory Defect Dizziness?
What is it AKA ?
What are the 4 parts that contribute to it?
Elderly when walking w/ impaired sensation in feet and poor vision
Benign Disequilibrium of Aging
Age, Dec Sensation, Poor vision, Light headed
What is the Tx for Vaso Vagal Syncope?
What classification of dizziness is always associated with positional changes?
Supine position w/ feet elevated, conciousness shoult return
Postural/Orthostatic HOTN that causes abrupt decrease of arterial flow
What are some of the underlying causes for Postural or orthostatic hypotension?
Which syncope classification is secondary to increased pressure on carotid sinus baroreceptors?
Chronic Dz or Polypharmaceutics
Carotid sinus hypersenstivity, usually found in Men over 50 w/ tight collar
What classification is associated w/ passing out on the commode while defecating?
What Sx is associated w/ VasoVagal Syncope?
Situational reflex syncope
Regains consciousness rapidly
What differentiates Vestibular Neuronitis from Labyrinthitis?
Name a common over the counter medication that can cause of Toxic Vestibulopathies?
Pure vestibular neuronitis= preserved auditory function Labyrinthitis= syndrome combined w/ unilateral hearing loss from viral origin
ASA
Name a rare cause of reflex syncope associated w/ sharp repetitive pain precipitated by swallowing/chewing?
How is it Tx?
Glossopharyngeal Neuralgia
Carbamazepine (anti-epileptic drug)
Med failure= Microvascualar decompression
Rhizotomy of Glossopharyngeal/Vagal fiber
Exercise induced syncope suggests what type of etiology?
What is the triad for Menier’s Dz?
Cardiovascular etiology
Unilateral hearing loss, Vertigo, Unilateral tinnitus w/ N/V
What is the treatment plan for Menier’s Dz?
Avoid salt intake, caffeine, alcohol, nicotine, monosodium glutamate (MSG) Tx stress/allergic rhinitis Diuretics: HCTZ/Triamterine Tx N/V: Meclizine, Scopolomine Valium (diazepam) Hearing Aid Gentamicin injection Surgery
What causes a Perilymphatic fistula?
How is it Tx?
Physical injury
Extreme barotrauma
Vigorous valsalva maneuvers Cough/Sneeze
Post-middle ear surgery
Bed rest, head elevation, and avoidance of straining
Surgical patch of the oval or round window
What is the most common cause of acute peripheral vertigo?
Acoustic Neuromas present w/ insidious onset of SNHL and can be associated w/ tinnitus/HA/vertigo. What PT population is it common in?
Benign PPV- brief/sudden episodes of vertigo w/ N/V
Middle aged females
Most Acoustic Neuromas are most commonly found on CN ?
What seizure is commonly found in children characterized by staring and lack of awareness?
CN8 in the cerebellopontine angle
Absence Seizure
Focal Seizures WITHOUT Dyscogntive features are characterized by what?
Focal Seizures WITH dyscognitive features are characterized by ?
No LOC, possible aura and body movement
Loss of awareness. Motor findings. Seizures involve impaired consciousness, responsiveness, and memory
A situation in which the duration of seizure is greater than how may minutes is status epilepticus?
What is the most common cause?
5min
Not taking seizure meds Metabolic disturbance- low sugar Drug toxicity CNS Infection/Tumor Head trauma
What are the 3 types of memory?
How is Working memory tested?
Working
Episodic
Lasting
Less than 30 seconds, so Tested w/ “repeat after me… “Neuro. Number. One”
How is Episodic Memory tested?
What is the time course for Delirium?
Word recall after 3-5min or,
Asking trivial events of the day
Acute Onset- acute change in mental status
What is the hallmark description of Delirium?
Wernicke’s Encephalopathy is found in ? PT population?
Waxing and Waning LoC
Chronic alcoholics*
PTs w/ malnutrition- emesis, starvation, renal dialysis, CA or AIDS
What are the risk factors for the most common form of dementia?
What are the 3 most common reversible causes of Dementia?
Alzeihmers
Age
Depression*
Hydrocephalus
Alcohol dependence
What is the single greatest risk factor for cognitive decline?
What abnormal protein is associated with Alzeihmer’s Dz?
Age
Extracellular amyloid beta deposits
What abnormal protein is associated with Lewy Body Dementia?
What abnormal protein is associated with Frontotemoral dementia?
A-synculein
Tau
Macroscopically (on MRI) what are the findings for AD?
How does this differ from Frontotemoral Dementia?
Cortical atrophy leads to compensatory dilation of ventricles
Frontotemporal Dementia is associated with marked atrophy of Temporal and Frontal lobes
Vascular Dementia lacks a uniform set of criteria but what are some findings that are suggestive of the Dx?
Cognitive deficit associated w/ Stroke
Abrupt onset w/ stepwise deterioration
Focal neuro findings on exam c/w stroke
Infarcts on MRI/CT
Alzeihmer’s Dz typically has what early sign?
How does this differ from Frontotemporal Dementia?
Abnormal Short term memory
Speech hesitant
Score of 24-27 on MMSE
Fronto temporal has early Behavioral changes
What is the triad for Normal Pressure Hydrocephalus?
What pseudomentia d/o is most commonly mistaken for dementia?
Cognitive decline
Urinary incontinence/urgency
Gait difficulty
Depression
How is depression Tx?
What are the three inherited forms of Chorea
SSRI/SNRI, CBT, Tx comorbidities
Huntington’s, Wilson’s, Benign hereditary chorea
What is unilateral chorea, with sudden, wild, flail-like movements involving proximal muscle groups?
What word is derived from the Greek word for restless and is abnormal movement w/ slow and writhing movements?
Hemiballismus
Athetosis, if held as prolonged posture is considered dystonia
What are SUSTAINED muscle contractions, frequently causing twisting, & repetitive movements or abnormal postures?
Name a Focal Dystonia?
Name a Generalized Dystonia?
Dystonia
Focal: Torticollis, Blepharospasm
Generalized dystonia: cerebral palsy, acute dystonic reactions
What is involuntary movements of the face and tongue, and very slow in performing voluntary movements?
What drugs can cause Tardive Dyskineisa?
Tardive dyskinesia
Long term Tx w/ antipsychotic drugs (dopamine-receptor blockers), Metoclopramide (reglan)
Define Essential Tremor
Rhythmic oscillatory movement enhanced by emotional stress and gone during sleep
Relieved by meds and alcohol
What are the 4 core Sxs of Restless Leg Syndrome?
What four items can clinically define Parkinson’s Dz?
Urge to move legs w/ or w/out sensations
wWorse w/ rest and at night
Improved w/ activity
Resting tremor
Cogwheel rigidity
Bradykinesia “masked facies”
Gait impairment
What do Pt’s w/ Parkinson’s Dz typically expire from?
What condition is characterized by genetic mutation causing premature apoptosis, atrophy in cerebral cortex and caudate?
Choking, pneumonia, falls
Huntingtons
Characterized by chorea and dementia
What autosomal recessive d/o affects copper metabolism that can cause neurologic manifestations?
What is the classic finding on PE?
Wilson’s Dz
Kayser-Fleisher rings
What unexplained Sxs are consciously produced?
What unexplained Sxs are unconsciously produced?
Factitious d/o (Munchausen’s)
Malingering
Somatoform d/o
Somatization d/o
Hypochondriasis
Conversion d/o- AKA pseudoneurologic syndrome
What are the risk factors for a stroke?
Primary arterial HTN A-Fib Smoking Medical Hx Previous TIA Age
What are the potential c/is for thrombolysis?
BP >185/110 mmHg w/ Tx Bleeding d/o Diathesis (plt <100K, HCT <25%) Head injury/stroke/ hemorrhage (prior 3 months) Surgery- past 14 days GI bleed- past 21 days Recent MI past 3 months
If PT is not a candidate for thromblytic/tPA therapy, what are they given?
How is BP controlled in ischemic strokes?
ASA
Keep BP below 220/120
BB- Esmolol
What is the MOA of Esmolol used in the context of a HTN emergency?
What are the BP goals in a hemorrhagic stroke?
Relaxes vessels and slows HR to improve blood flow and decrease BP
150-22= 140 >220= 160
What is the BP goal for a hemorrhagic stroke w/ subarachnoid hemorrhage?
What meds need to be stopped and what is monitored for?
Keep SBP below 160
Stop all antiplatelet/anti-coag drugs
Use of IV Nicardipine of Esmolo needs monitoring for cerebral hypoperfusion
Which are more common ischemic strokes or hemorrhagic strokes?
What are the three most predictive examination findings for acute ischemic stroke?
80% ischemic
Asymmetric facial paresis
Arm drift/weakness
Dysarthria
What condition is a sudden onset of focal neurologic s/sx that last less than 24 hrs and typically resolve in a single hour?
TIA
After working up a TIA, what is typically out pt Tx?
What is the most common medical cause of SAHs?
Manage HTN w/ ASA, Ticlopidine, Clopidogrel
Ruptured cerebral aneurysm
What is the classic presentation of pts w/ an aneurysmal SAH?
What is the initial study of choice?
Sudden-Onset severe HA “Worst HA of my Life” “Thunderclap HA”
CT w/out contrast
What are relatively compact mass of sinusoidal vessels, typically packed close together?
What are true capillary malformations that often form extensive vascular networks through an otherwise nl brain?
Cavernous angiomas
Telangiectasia
What is the typical course of events for an Epidural Hematoma?
What is the most common cause of an Epidural Hematoma?
Hard blow to head, brief LOC followed by lucid period, when PT is wake/alert. As hematoma expands, PT experiences HA followed by vomiting/lethargy/hemiparesis, may progress to coma
Trauma to the middle meningeal artery
What type of Fx should be suspected in an Epidural Hematoma?
What is the mortality rate of an Epidural Hematoma that is left untreated?
Temporal skull Fx
100% death
Why does a subdural hematoma accumulate slower than an epidural hematoma?
mTBI, AKA concussion has what typical GCS score?
SDH is of venous origin whereas the EDH is arterial
13-15
Do Diffuse Axonal Injuries typically show up on CT?
What is the timeline for post-concussion syndrome?
Severe TIA lesions that contain substantial blood will show on CT, but more commonly, the CT will be negative
Sx for 7-10 days after injury
What is the timeline for For Post concussion d/o?
Know how to measure a GCS on a PT
> 3mon
What are the criterias for pronouncing brain death?
Define the oculocephalic reflex
CNS event compatible w/ dx
Exclude all other potentials
No intoxication/drugs/poisons
Core temp >32C/90F
Doll’s eyes
Assess brainstem function in comatose PT w/ intact brainstem
Head is turned, eyes move toward opposite side
The absence of doll’s eye’s movement in a comatose PT is indicative of ?
What is the next test conducted if Doll’s Eyes are absent?
Lesion of midbrain/pons
Oculovestibular reflex- ice water into EAC. PT w/ intact brainstem= eyes drift TOWARD the irrigated ear
What is the first stage sign of a central herniation?
With which of the herniations can the increased compression of the anterior cerebral arteries may cause the Pt to have leg weakness?
Dec level alertness
Small, reactive pupils
Decorticate posturing
Midposition pupils Decerebate posturing
Transfacial
What are 3 cardinal features of brain death?
Coma/unresponsiveness- no response pain
Absence of brainstem reflexes-
pupils, oculocephalic, gag, grimacing
Apnea- no respiratory attempts even with PCO2 > 60mmHg
Most common form of suppurative CNS infection?
What event greatly improves the Dz outcome?
Meningitis
Early Dx
Most Common cause for Community acquired Meningits?
What is the triad for meningitis that 2/3rds of PTs will have
Streptococcus pneumonia
Fever, HA, nuchal rigidity
What are the special tests for meningitis?
What is the Tx for Viral meningitis?
Kernig’s and Brudzinkski
Primarily symptomatic-
Analgesics, Antipyretics, Antiemetics, Fluids/E+ monitored
What factors associated with meningitis are associated w/ a poor prognosis?
What is the time frame goal for Abx on board for a patient suspected of bacterial meningitis?
Age- old/young Delayed Dx/Tx Stupor/Coma Seizure Focal neurological signs
60min
Most common type of HA & account for more than ½ all HA’s seen in Primary Care
How does this type of HA present?
Tension HA
Bilateral, “Band-like” distribution
Tight pain in frontal/occipital regions
Dizziness is a term that describes a variety of feelings that includes ? 3
What are the 3 categories dizziness is broken down into?
Vertigo, Disequilibrium, Light headed
Pre/Syncope
Vertigo
Miscellaneous
Define Vertigo
Define Disequilibrium
Sense of rotational motion, indicates dysfunction in vestibular system
Describes feeling of uneasiness, about to fall and associated w/ an abnormal gait
What are the two criteria that can lead to a syncope?
What are the 5 categories of causes of syncope?
Dec blood or O2 to the brain
Vasovagal (neurally mediated) Posture/OHOTN Reflex (Carotid, Situational, Glossopharyngeal) CV d/o Cerebrovascular d/o
Vasovagal syncope is the result of what two events?
Define Vasodepressory syndrome
SNS withdrawal= dilation
Inc PNS- bradycardia
Associated w/ only sympathetic w/drawal
What is AKA the “common faint”
What are the 4 main S/Sxs
Vasovagal/neurally mediated syncope
Diaphoresis, Diuretic, Clonic movement, Retained sphincter
What is the physiology behind glossopharyngeal neuralgia
What is unique about these types of syncopes?
Afferent impulse activation in CN8 terminating in nucleus solitarius in the medulla
Less likely to be benign in origin and more likely in elderly PTs
What other neurological issues does glossophyrangeal neuralgia mimic?
What vessels supply the brain stem structures responsible for consciousness?
Trigeminal neuralgia
Vertebrobasilar arteries
Most PTs w/ CV presyncopal Sxs also experience ?
Define Basilar Artery Migraine
Focal neurological ischemia Sxs: weakness, ataxia, diplopia, dysarthria
Rare d/o causing syncope in adolescents
Syncope when PT is sitting/upright means ?
Syncope when PT is laying down means ?
Syncope when PT was exercising means ?
OHOTN
Cardiac event or seizure
CV etiology
What test is the first one conducted when working a PT up for syncope?
Head up tilt table test w/ Isoproterenol infusion
If PT had a prodromal light headedness prior to passing out suggests ?
If they had aura Sxs or have postical state, this suggests ?
If PT is clearly thinking upon recovery suggests ?
Syncope
Seizure
Faint
Vertigo can be associated with what 4 S/Sxs?
Vertigo can arise from an issue in what 3 systems?
Impulsion
Oscillopsia
N/V
Gait ataxia
Vestibular, Visual, Somatosensory
What is vertigo most commonly caused by?
What must it be differentiated from?
Asymmetry/imbalance between R/L vestibular systems
Central and Peripheral causes
How does Weber and Rinne tests appear on PE w/ PTs what have vertigo
Unilateral conduction
W: hears vibration in Dz ear
R: no AC after BC
Unilateral partial nerve deafness:
W: Vibrations in normal ear
R: hears AC after BC is gone
What are the 3 types of nystagmus?
What can cause physiologic vertigo?
Pendulum Saccade (fast), Pursuit (slow)
Intersensory mismatch- car sickness
Unfamiliar movements- sea sickness
Unusual head/neck position
Post-spinning
What can cause pathological vertigo?
Vestibular dysfunction- most common
Lesion on stabilizing sensory systems
Visual vertigo
Peripheral neuropathy/myelopathy
What are the difference in Sxs of Peripheral and Central vertigo?
Peripheral= short, movement dependent, horizontal, nystagmus
Central= long, not movement dependent, vertical or horizontal nystagmus
What are the peripheral vertigo causing d/os?
What are the central vertigo causing d/os?
BP MAG
BPPV, Peripheral vestibulopathy, Meniere’s, Acoustic Neuroma, Gentamycin toxicity
Wernicke’s CAMIS
Intoxication, Wenicke’s, MS, Alchoholic cerebellar degeneration, TIA/stroke, Cerebellar ataxias
What are the characteristics of peripheral vertigo d/os?
What are the 7 types of vertigo?
Lesion outside of brain
Sudden, lasting days w/ intense Sxs
Exacerbated by movement
Distress but no neuro PE findings
Vestibular neuronitis, Labrynthitis/Concussion, Meniere’s, Perilymph fistula, Bening positional, Cervical, Vestibular migraine
What is seen on PE of Vestibular Neuronitis in the acute phase?
How is it Tx?
Nystagmus and absent response to caloric testing
Supportive
Diazepam, Meclizine, Vestibular therapy
Refer to ENT
How is Labyrinthitis Tx?
What is the most common cause of vertigo after a concussion?
ABX if febrile/sign of infection
Diazepam, Meclizine
Labyrinthine Concussion Traumatic Vertigo
What type of injury is Labyrinthine Concussion Traumatic Vertigo associated with?
This form of vertigo can also result from ?
Basilar skull fracture causing vertigo, deafness in affected ear
Cupulolithiasis- causes episodic position vertigo
How is Labyrinthine Concussion Traumatic Vertigo Tx?
What is the relation to deafness and vertigo in Meniere’s?
Supportive, Vestibular suppressant/therapy
Deafness gets worse vertigo gets better
All Meniere’s suspected PTs get what work up?
What inner ear issue can be seen in PTs w/ BPPV?
Audiometry
Vestibular tests
MRI
Otolithic crystals made of calcium carbonate in semi-circular canals
What Sx is always present in BPPV?
How are Sxs reproduced on PE?
Positional nystamus
Dix-Hallspike Test/Barany Maneuver
How is BPPV relieved?
What causes cervical vertigo?
Epley reposition maneuver
Meclizine
Valium
Scopolomine patch
Neck hyperextension or DJD
How is Cervical vertigo Tx?
How does vestibular migraine present and what is it temporarily related to?
Neck exercises, collar, muscle relaxers
Episodic vertigo w/ temporary HA
Vestibular Migraine has a similar presentation to ?
How is it Tx?
Meniere’s
Migraine Tx/prophylaxis
Diet change
Anti-emetics
What vestibular orders last the least to the longest w/ auditory Sxs?
Seconds- perilymphatic fistula
Hrs- Meniere’s, Syphillis
Days- Labrynthitis/Labyrinthine concussion
Months- acoustic neuroma, ototoxicity
What vestibular orders last the least to the longest w/ NO auditory Sxs?
Seconds- Positional vertigo/Cupulolisthiasis, Certebrobasilar insufficiency, Cervical
Hrs- recurrent vestibulopathy, vestibular migraine
Days- vestibular neuronitits
Months- MS, cerebellar degeneration
Central d/os causing vertigo are lesions located where?
What other S/Sxs do they present w/
Cerebellum Pons
Ataxia, Nystagmus
What are the 6 common causes of central vertigo?
Vertebrobasilar ischemia/insufficiency Vertebrobasilar TIA/stroke Acoustic neuroma Toxic vestibulopathies MS Neurodegeneration involving vestibulocerebellum
What vessel is involved by TIA that causes central vertigo?
What 3 underlying conditions must be r/o when working a PT up for central vertigo?
Medial branch of PICA
Anemia, Pregnancy, Glucose derangement
What is the preferred imaging modality for suspected central vertigo?
How is Wernicke’s Tx?
How is MS flare up Tx?
MRI
Thiamine replacement
Prednisone burst
What are the S/Sxs of an Acoustic Neuroma
These types of tumors account for 80% of ? tumors
Tinnitus, HA, Vertigo, Facial weakness
Unilateral sensorineural hearing loss
Cerebellopontine angle tumors
Acoustic neruomas are made of ? cells that form ?
What is the preferred imaging for these?
Uniform spindle cells
Palisades called Verocay bodies
MRI w/ contrast
How are acoustic neuromas Tx?
What 4 drugs can cause toxic vestibulopathies?
Sxs, non-compressible and <3cm- stereotactic radio surgery via Gamma knife
Gentamycin
Salicylates
Quinine
Cis-platinum
Balance is maintained by what 3 senses?
Loss of consciousness occurs when ?
Vision, Proprioception, Vestibular
Function of both cerebral hemispheres or brain stem RAS are compromised