Neurology Flashcards
[Neuro/NTD]
Types of neural tube defects? (3)
- Spina bifida
- Encephalocele
- Anencephaly
[Neuro/NTD]
3 forms of spina bifida
- Spina bifida occulta
- Meningocele
- Myelomeningocele
[Neuro/NTD]
Diagnosis?
Midline defect of the spinous process
Asymptomatic (m/c)
Leg weakness, Constipation, Neurogenic bladder
Commonly involved in L5-S1
Spina bifida occulta
[Neuro/NTD]
Diagnosis?
Defect in the posterior vertebral arches
Delay surgery: completely normal neurologic examinations and complete full-tliickness skin covering of the meningocele
Immediate surgical repair: cerebrospinal fluid (CSF) leaking from the meningocele, with incomplete skin covering need to prevent meningitis
Meningocele
[Neuro/NTD]
Diagnosis?
Posterior neuropore fails to close properly
Spinal cord protruding in the sag
Myelomeningocele
[Neuro/NTD]
Diagnosis?
Wasting of the small muscles of the hand
Sensory deficits of the arms
Absence of deep tendon reflexes in the upper extremities
Fluid cavity in the spinal cord
Cervical syrinx
[Neuro/Hydrocephalus]
Normal CSF volume?
Adult: __
Infant: __
Adult: 150 ml
Infant: 50 ml
[Neuro/Hydrocephalus/congenital]
Examples of congenital noncommunicating hydrocephalus? (3)
- Congenital aqueductal stenosis
- Dandy-Walker malformation
- Chiari malformations
[Neuro/Hydrocephalus/acquired]
Examples of acquired noncommunicating hydrocephalus? (4)
- Brain tumors
- Intraventricular clots
- Abscess
- Vein of Galen malformation
[Neuro/Hydrocephalus/acquired]
Name of anomaly?
Prenatal or neonatal period
Sudden increased in head circumference
Prominent visible scalp veins
Bruit from the fontanelle
Vein of Galen Malformation (VOGM)
[Neuro/Hydrocephalus]
Three types of hydrocephalus?
- Non-communicating
- Communicating
- Excessive CSF production
[Neuro/Hydrocephalus]
Examples of excessive CSF production hydrocephalus?
Functional choroid plexus papillomas and carcinomas
[Neuro/Hydrocephalus]
Cranial nerves involved in hydrocephalus? (2)
CN 3: Oculomotor
CN 6: Abducens
[Neuro/CN]
Names of cranial nerves? (12)
- Olfactory nerve
- Optic nerve
- Oculomotor nerve
- Trochlear nerve
- Trigeminal nerve
- Abducens nerve
- Facial nerve
- Auditory/vestibular nerve
- Glossopharyngeal nerve
- Vagus nerve
- Accessory nerve
- Hypoglossal nerve
[Neuro/CN]
Number of Olfactory nerve?
CN 1
[Neuro/CN]
Number of Optic nerve?
CN 2
[Neuro/CN]
Number of Oculomotor nerve?
CN 3
[Neuro/CN]
Number of Trochlear nerve?
CN 4
[Neuro/CN]
Number of Trigeminal nerve
CN 5
[Neuro/CN]
Number of Abducens nerve
CN 6
[Neuro/CN]
Number of Facial nerve?
CN 7
[Neuro/CN]
Number of Auditory/vestibular nerve?
CN 8
[Neuro/CN]
Number of Glossopharyngeal nerve?
CN 9
[Neuro/CN]
Number of Vagus nerve?
CN 10
[Neuro/CN]
Number of Accessory nerve
CN 11
[Neuro/CN]
Number of Hypoglossal nerve?
CN 12
[Neuro/CN]
Symptoms of CN 3 palsy?
Down and out eye deviation
[Neuro/CN]
Symptoms of CN 6 palsy?
Fail to abduct of the eye
[Neuro/Hydrocepalus]
Cushing triad for hydrocephalus?
- Bradycardia
- Systemic hypertension
- Altered respiratory rates
[Neuro/Hydrocepalus]
Name of sign?
Cause of this sign?
Sun setting sign
Upward gaze is impaired due to pressure on the midbrain (Hydrocephalus)
[Neuro/Hydro/DWM]
What consists of Dandy-Walker malformation? (3)
- Posterior fossa cyst that is continuous with the 4th ventricle
- Partial or complete absence of the cerebellar vermis
- Hydrocephalus.
[Neuro/Hydro]
Chiari malformation vs Dandy-Walker
Developmental delay
Hypotonia, later developing spasticity
Poor coordination
Ataxia
Dandy-Walker malformation
[Neuro/Hydro/Chiari]
Types of Chiari malformation? (3)
Type 1: cerebellar tonsils or vermis are pushed down below the level of the foramen magnum
Type 2: the 4th ventricle and lower medulla are pushed down below the level of the foramen magnum
Type 3: Herniation of the cerebellum occurs through a cervical spina bifida defect
[Neuro/Hydro/Chiari]
Dandy-Walker vs Chiari malformation type 1
Dysphagia (CN12)
Vertigo, ataxia
Sleep apnea
Headache, neck pain
(Symptoms occur due to dysfunction of lower cranial nerves, the brainstem, and/or the spinal cord.)
Chiari malformation type 1
[Neuro/Migrational anomalies]
Examples of neuronal Migrational anomalies? (5)
- Polymicrogyria
- Lissencephaly
- Schizencephaly
- Holoprosencephaly
- Agenesis of the corpus callosum
[Neuro/Migrational/Polymicrogyria]
Diagnosis?
Causes? (3)
Multiple small gyri
Symptoms varied, mild to severe
Developmental delay, intellectual disability, spasticity, microcephaly, seizure
Polymicrogyria
- Cause:
Intrauterine ischemic injuries
Intrauterine infection
Genetic syndromes (Aicardi syndrome, Zellweger spectrum syndrome)
[Neuro/Migrational/Lissencephaly]
Diagnosis?
Smooth cerebral surface with thickened cortical mantle and a lack of cerebral folds (gyri) and grooves (sulci)
Symptoms:
Failure to thrive
Microcephaly
Marked developmental delay
Severe epilepsy
Blind
Associated with Miller-Dieker syndrome
Lissencephaly
[Neuro/Migrational/Schizencephaly]
Definition of?
Unilateral or bilateral clefts within the cerebral hemispheres
Schizencephaly
[Neuro/Migrational/Holoprosencephaly]
Definition of?
Defective cleavage of the prosencephalon (i.e., forebrain or cerebral cortex, basal ganglia, thalamus, hypothalamus).
Failure of the formation of 2 cerebral hemispheres
Symptoms: Diabetes insipidus, Panhypopituitarism, Visual problems, Epilepsy, Facial anomaly
Associated with Trisomy 13
Holoprosencephaly
[Neuro/Migrational/Agenesis of corpus callosum]
Associated with agenesis of corpus callosum?
Associated autosomal trisomies (2)
Genetic syndrome (1)
Drug (1)
Trisomy 8
Trisomy 18
Aicardi syndrome
Cocaine
[Neuro/Cerebral palsy]
Causes of cerebral palsy? (5)
(Multifactorial)
1. Neonatal encephalopathy
2. Asphyxia
3. Low birth weight
4. Congenital malformation
5. Infection
[Neuro/Cerebral palsy]
Types of cerebral palsy? (5)
- Spastic (70%)
- Dyskinetic (15%)
- Ataxic (5%)
- Hypotonic (7%)
- Mixed (3%)
[Neuro/Cerebral palsy]
Most common preterm infant cerebral palsy type due to intraventricular hemorrhage?
Diplegic CP
(because the hypoxic damage involves the periventricular white matter where the descending motor fibers for the lower extremities are closer to the ventricles)
[Neuro/Cerebral palsy]
Medication to prevent cerebral palsy to mother?
Magnesium sulfate
[Neuro/UMN/LMN]
Characteristics of upper motor neuron lesions? (3)
Spasticity
Hyperreflexia
Absent fasiculations
[Neuro/UMN/LMN]
Characteristics of lower motor neuron lesions? (3)
Hypotonia
Hyporeflexia
Fasiculations
[Neuro/Cerebral palsy]
Symptoms of spastic cerebral palsy? (3)
(Upper motor neuron signs)
1. Weakness
2. Hypertonicity with contractures
3. Hyperreflexia with clonus
[Neuro/Cerebral palsy]
Symptoms of dyskinetic cerebral palsy?
Pathologic location of dyskinetic cerebral palsy?
Impaired, uncontrolled, and purposeless movements that disappear during sleep
Basal ganglia
[Neuro/Cerebral palsy]
Type of cerebral palsy due to neonatal bilirubin encephalopathy (kernicterus)?
Dystonic cerebral palsy
[Neuro/Cerebral palsy]
Medication for spasticity? (4)
- Diazepam
- Dantrolene sodium
- Baclofen
- Botox injection
[Neuro/Cerebral palsy]
Surgery for upper spasticity?
Selective dorsal rhizotomy
[Neuro/Chorea]
Causes of chorea?
- Primary
- Secondary (3)
- Primary
- Secondary
Sydenham chorea
SLE
Drugs/toxins (Oral contraceptive pills, Metoclopromide)
[Neuro/Chorea]
Medication to treat chorea?
Dopamine receptor blocker (Tetrabenazine)
[Neuro/Cerebrovascular disease]
Diagnosis?
Commonly affected artery?
Older children, adolescent
Secondary to trauma
An abrupt cessation of momentum (e.g., car accidents) or when the neck is violently and/or forcefully shaken
Headache, neck, or eye pain
Honer syndrome (miosis, ptosis, and anhidrosis): Internal carotid artery
Cervicocephalic arterial dissection
Internal carotid artery
[Neuro/Cerebrovascular disease]
Metabolic causes of ischemic stroke? (3)
- Fabry disease
- Homocystinuria
- MELAS (mitochondrial encephalopathy, lactic acidosis, and stroke-like episodes)
[Neuro/Cerebrovascular disease]
Most common artery for ischemic stroke in infant?
Middle cerebral artery
[Neuro/Cerebrovascular disease]
Associated syndrome high risk for saccular aneurysms? (4)
- Coarctation of the aorta
- Polycystic kidneys
- Ehlers-Danlos syndrome
- Marfan syndrome
[Neuro/Cerebrovascular disease]
Location of thrombosis?
Increased intracranial pressure: headache, papilledema, nausea, vomiting, and cranial nerve (CN) 6 palsy
Superior sagittal sinus thrombosis
[Neuro/Cerebrovascular disease]
Sinus thrombosis that is commonly associated with otitis media and mastoiditis, cerebral vein thrombosis?
Right lateral sinus thrombosis
[Neuro/Cerebrovascular disease]
Location of thrombosis?
Proptosis
Chemosis
Uni- or bilateral ophthalmoplegia (CN 3,4,5,6)
Associated with infection of the paranasal sinuses, face, nose, or mouth
Cavernous sinuses thrombosis
[Neuro/Head trauma]
Characteristics of basilar skull fracture? (5)
- Bilateral orbital ecchymoses (“raccoon eyes” or black eyes)
- Posterior auricular ecchymoses (Battle sign)
- Tympanic membrane discoloration
- Cerebrospinal fluid (CSF) otorrhea and rhinorrhea
- Pneumocephalus
[Neuro/Head trauma]
Cause?
After linear skull fracture
Late onset of focal seizures
Focal neurologic signs
Visible and palpable skull deformity
Leptomeningeal cyst
[Neuro/Head trauma/EDH]
Pathology of epidural hematoma? (2)
Tear in the bridging veins or dural sinuses (m/c)
Tear of the middle meningeal artery: Temporal bone fracture
[Neuro/Head trauma/EDH]
Early signs (3) and late signs (3) of brain stem herniation?
Early signs:
1. Ipsilateral dilated pupil
2. Contralateral hemiplegia
3. Complete CN 3 palsy
Late signs:
1. Fixed and dilated pupils
2. Slow and irregular respiration
3. Hypotension and tachycardia
[Neuro/Head trauma/SDH]
Treatment?
Acute subdural hematoma: __
Chronic subdural hematoma: __
Epidural hematoma: __
Acute subdural: Surgery, most likely arterial
Chronic subdural: small -> observation, large -> surgery
Epidural: surgery
[Neuro/Head trauma]
Most common cause of chronic subdural hematoma?
Shaken baby syndrome
[Neuro/Spinal cord injury]
Physical signs for spinal cord injury in newborns?
Galant reflex
[Neuro/Spinal cord injury]
Location of injury?
Flaccidity
Areflexia
Autonomic dysfunction: hypotension and shock
Spinal shock
[Neuro/Brachial plexus injury]
Which spinal nerves injuries to cause Erb palsy?
Possible additional nerve?
Absent reflex?
Treatment indication?
C5, C6, and/or C7
Phrenic nerve
-> Asymmetric diaphragm contraction
-> Asymmetric chest expansion
Absent biceps tendon reflex
Treatment:
- No improvement in 3 months
[Neuro/Spinal nerves]
How many spinal nerves?
Cervical: 8
Thoracic:12
Lumbar: 5
Sacral: 5
[Neuro/Brachial plexus injury]
Presentation of Klumpke palsy?
- Motor
- Sensory
- T1 involvement
Klumpke (C8-T1)
Motor: Claw hand: extension of MCP joint, flexion of IPJ
Sensory: Ulnar side of hand sensory defect
T1 involvement: Horner syndrome (ipsilateral ptosis, miosis, anhidrosis)
[Neuro/Nerve injury]
Which nerve injury?
After IM injection
Foot drop
Sensory loss of the leg below the knee
Absence of ankle jerk reflex
Sciatic nerve injury
[Neuro/Cranial nerves]
CN2 function? (2)
Optic nerve
1. Visual acuity, field, color vision
2. Pupillary reaction
[Neuro/Cranial nerves]
CN 3 function?
Oculomotor
- Motor for superior rectus, inferior oblique, inferior rectus
[Neuro/Cranial nerves]
CN 4 function?
Trochlear
- Superior oblique: look down
[Neuro/Cranial nerves]
CN 6 function?
Abducens
- Lateral rectus
[Neuro/Cranial nerves]
CN 5 function? (3)
Trigeminal
- Sensation of face: ophthalmic, maxillary, mandibular
- Motor: Masseter and temporalis
- Reflex: Corneal
[Neuro/Cranial nerves]
CN 7 function? (2)
Facial
- Sensory: 2/3 anterior tongue taste
- Motor: facial muscles -> facial expression
[Neuro/Cranial nerves]
CN 8 function?
Vestibulocochlear
- hearing
- balance
[Neuro/Cranial nerves]
CN 9 and 10 functions? (3)
9 glossopharyngeal
10 vagus
- Sensory: CN9 1/3 taste, CN10 visceral
- Motor: uvular/palate
- Reflex gag
[Neuro/Cranial nerves]
CN 11 function?
Accessory
- SCM and trapezius
[Neuro/Cranial nerves]
CN 12 function?
Hypoglossal
- Motor: Tongue
[Neuro/Nerve/Facial nerve palsy]
Cause of Bell’s palsy? (4)
Treatment?
- Postinfectious, viral
HSV, herpes zoster - Lyme
- Trauma
- Neoplasm
- Treatment: Oral steroid
[Neuro/Nerve/Facial nerve palsy]
Which congenital nerve palsy?
Bell’s palsy (facial nerve palsy)
Ocular abduction impairment
Mobius syndrome
(Hypoplasia or agenesis of the facial nucleus and/or nerve and CN 6 (abducens) abnormality)
[Neuro/Nerve palsy/Facial nerve palsy]
Name of phenomenon?
Simultaneous eyelid blinking with sucking jaw movement
Amblyopia
Refractive errors
Strabismus
Marcus Gunn phenomenon
(Abnormal innervation of CN 5 trigeminal (pterygoid muscle) and CN3 oculomotor nerve)
[Neuro/Seizure]
Characteristics of generalized seizure? (5)
- Onset
- LOC
- Presentation
- Aura
- EEG
- Abrupt onset
- Loss or alteration of awareness
- Variable bilateral symmetric motor activity associated with changes in muscle tone
- No warning of the attack; no aura
- Epileptiform activity that is bilateral and synchronous (shown on EEG)
[Neuro/Seizure]
Types of generalized seizures? (5)
- Tonic-clonic
- Myoclonic
- Juvernile myoclonic
- Absence
- Atonic
[Neuro/Seizure]
Typical generalized tonic clonic seizure presentation? (3)
- Time of tonic
- Time of clonic
- Postictal
Tonic (sustained contraction) first lasting 10-20 seconds
Clonic (rhythmic muscle jerks) second lasting 30-60 seconds
Postictal period for a few minutes to several hours
[Neuro/Seizure]
Characteristics of myoclonic seizures? (4)
- Duration
- How many muscle group
- Presentation
- LOC
- Short duration (< 1-2 seconds)
- Rapid muscle contractions, often in 1 limb, but can involve bilateral extremities or trunk
- Isolated or repetitive jerks
- Preservation of awareness
[Neuro/Seizure]
Characteristics of Progressive myoclonic epilepsy? (3)
- Progressive neurodegenerative genetic diseases
- Cognitive and functional decline
- Worsening seizures, and early death
Lafora disease
MERRF (Myoclonic epilepsy with ragged red fibers)
[Neuro/Seizure]
Which Progressive myoclonic epilepsy?
- Epilepsy in late childhood or adolescence
- Difficulty walking, muscle spasms (myoclonus)
- Cognitive deteriorations and dementia
Lafora disease
[Neuro/Seizure]
Characteristics of Juvenile Myoclonic Epilepsy? (5)
- Time of the day
- Associated seizure
- Intelligence
- Family history
- Typical onset
- EEG pattern
- Morning myoclonic jerks (often with dropping of items in hands)
- +/- History of absence seizures
Generalized tonic-clonic seizures occurring just after awakening or during sleep - Normal intelligence
- Family history of similar seizures
- Onset 8-20 years of age
- EEG: Generalized, fast (4 - 6 Hz) polyspike and slow wave pattern
[Neuro/Seizure]
Drug of choice for Juvenile Myoclonic Epilepsy?
Valproate
[Neuro/Seizure]
Characteristics of Absence seizures? (4)
- Aura
- Presentation
- LOC
- Postictal
- EEG
- Typical remission age
- No aura
- Episodes of extremely short lapses in awareness, staring for 10-20 seconds, with possible flickering of the eyelids or eye rolling or mouth automatisms
- Amnesia during the episodes
- No postictal period
- EEG: 3 Hz generalized spike and wave discharge
- Remission by 12 years old
[Neuro/Seizure]
Characteristics of Atonic seizure? (4)
- Predrome
- Presentation
- Duration
- LOC, postictal
- 1 or more myoclonic jerks sometimes occurring immediately before muscle tone is lost
- Sudden and complete loss of tone in the limbs, neck, and trunk muscles (without warning)
- Typically brief in duration
- Loss of awareness, complete awareness returning very quickly after the attack
[Neuro/Seizure]
Characteristics of Benign Epilepsy with CentroTemporal Spikes (BECTS, Benign Rolandic Epilepsy)? (4)
- Age
- Seizure type
- Presentation
- Time of the day
- LOC
- Elementary school age
- Focal aware seizure, 50% occur at least 1 secondary generalized tonic-clonic during sleep
- Facial numbness or twitching, guttural vocalizations, drooling, dysphasia, and difficulty with speech
- Shortly after going to sleep or just before or after waking up
- No loss of awareness
[Neuro/Seizure]
Characteristics of focal aware seizures (partial simple)? (2)
- Seizure type
- Post-seizure
- Focal motor seizures (m/c), or sensory, or adversive (rotation of head or neck), asynchronous tonic or clonic
- Todd paralysis but no post-ictal
[Neuro/Seizure]
Characteristics of focal seizures with impaired awareness (Complex partial)? (3)
- Aura
- Presentation
- Postictal
- Aura: depersonalization, hallucinations, intense emotions
- Automatism: repetitive lip smacking, swallowing, chewing
- Postictal: behavioral
[Neuro/Infantile spasm]
Characteristics of infantile spasm? (5)
- Age
- Presentation
- Duration
- Aggravating
- Development
- EEG
- Peak at 3 to 7 months
- Jackknife flexor spasm (flexion of neck/trunk, adduction of extremities)
- Clusters of a brief spasm
- Aggravated from sleep to awake
- Developmental regression
- Hypsarrhythmia: high-voltage, irregular, slow waves that are asynchronous
[Neuro/Infantile spasm]
Metabolic/genetic condition associated with infantile spasm? (3)
- Phenylketonuria
- Tuberous sclerosis
- Trisomy 21
[Neuro/Infantile spasm]
Percentage of infantile spasm caused by tuberous sclerosis?
30%
[Neuro/Infantile spasm]
Triad of West syndrome? (3)
- Infantile spasm
- Intellectual disability
- Hypsarrhythmia
[Neuro/Infantile spasm]
Treatment options of infantile spasm? (4)
- ACTH
- Oral prednisone
- Vigabatrin
- Pyridoxine
[Neuro/Infantile spasm]
Drug of choice for infantile spasm from Tuberous sclerosis?
Vigabatrin
[Neuro/Epilepsy]
Which epilepsy syndrome?
Multiple seizure types (GTC, absence, atonic, tonic)
Intellectual disability
A characteristic EEG pattern (sharp spike and wave): Slow, repetitive wave complex 1.5-2.5 Hz
Lennox-Gastaut syndrome
[Neuro/Epilepsy]
Which epilepsy syndrome?
Likely immunologic process involving only 1 hemisphere of the brain
Generalized seizures become focal, unremitting, and limited to 1 side of the body
Eventually, hemiparesis, diminished intelligence, and hemianopia occur
MRI: Unilateral cerebral atrophy
Rasmussen syndrome
[Neuro/Epilepsy]
Pathologic laughter
Without an appropriate reason for laughing
Associated with Hypothalamic hamartomas
Gelastic Seizures
[Neuro/Seizure/AEM]
Preferred drug for focal seizures?(2)
Oxcarbazepine
Carbamazepine
[Neuro/Seizure/AEM]
Possible side effects of Valproate? (5)
- Teratogen
- Hyperammonemia
- Dose-related thrombocytopenia
- Weight gain
- Tremor
[Neuro/Seizure/AEM]
Possible side effects of carbamazepine? (3)
- Leukopenia
- Hepatotoxicity
- Syndrome of inappropriate antidiuretic hormone secretion (SIADH), resulting in hyponatremia
[Neuro/Seizure/AEM]
Possible side effects of phenytoin? (4)
- Hirsutism
- Gum hypertrophy
- Ataxia
- Stevens-Johnson syndrome
[Neuro/Seizure/AEM]
Possible side effects of ethosuximide? (4)
- Abdominal pain
- Skin rash
- Liver dysfunction
- Leukopenia
[Neuro/Seizure/AEM]
Side effects of phenobarbital? (2)
- Severe behavioral changes
- Impairment of cognition
(Only used in infants)
[Neuro/Seizure/AEM]
Possible side effects of oxcarbazepine? (3)
- Ataxia
- Nystagmus
- Hyponatremia
[Neuro/Seizure/AEM]
Possible side effects of levetiracetam (1)?
Irritability, aggression
[Neuro/Seizure/AEM]
Possible side effect of topiramate? (3)
- Slowing of cognition
- Metabolic acidosis
- Glaucoma
[Neuro/Neonatal seizure]
Inborn error of metabolism that can cause seizure? (3)
- Urea cycle disorder
- Aminoacidopathies
- Pyridoxin-dependent epilpesy
[Neuro/Neonatal seizure]
Characteristics of benign neonatal seizure? (3)
- Patient character
- Age
- Seizure type
- When to stop seizure medication?
- Term babies with good Apgar scores following a normal pregnancy and delivery
- Peaks at 4-6 days (“fifth day fits”)
- Clonic seizures, unifocal or multifocal
- Stop by 1 month
[Neuro/Seizure/Febrile seizure]
For febrile seizures incidence,
___% of children experience at least 1 febrile seizure before 5 years of age
___% of these occur before 18 months of age
2-5% of children experience at least 1 febrile seizure before 5 years of age
50% of these occur before 18 months of age
[Neuro/Seizure/Febrile seizure]
Common infections that cause febrile seizures? (2)
- Roseola (human herpesvirus 6)
- Shigella infection
[Neuro/Seizure/Febrile seizure]
Indications to do Lumbar puncture when febrile seizure? (3)
- In the presence of meningeal signs and symptoms
- In children 6-12 months of age whose immunization status is unknown or who are not or incompletely immunized for Haemophilus influenzae or Streptococcus pneumoniae
- In those who are on antibiotics (because antibiotics can mask the clinical manifestations of meningitis)
[Neuro/Seizure/Febrile seizure]
Recurrent risk for febrile seizures? (4)
- Age
- Family history
- Fever character
- 1st seizure before 12 months of age
- History of a 1st degree relative with febrile seizures
- History of seizure with only a modest temperature elevation (< 104.0°F [< 40.0°C])
- Suffered a seizure after having the fever for only a very short duration
[Neuro/Seizure/Febrile seizure]
For febrile seizure prognosis,
___% of children with febrile seizures have only 1 episode
___% of children with simple febrile seizures eventually develop epilepsy
65% of children with febrile seizures have only 1 episode
1-2% of children with simple febrile seizures eventually develop epilepsy (not too different from general population.)
[Neuro/Migraine]
Diagnostic criteria of migraine without aura? (3)
At least 5 attacks that:
1. Last between ___ hours
2. Include at least 2 of the following (4):
3. Have at least 1 associated symptom (2):
At least 5 attacks that:
1. Last between 2 and 72 hours
2. Include at least 2 of the following:
Bilateral or unilateral location
Pulsating
Moderate-to-severe pain
Pain made worse with activity
3. Have at least 1 associated symptom:
Nausea/vomiting
Photophobia/phonophobia
[Neuro/Migraine]
Diagnostic criteria for migraine with aura?
- At least 2 attacks with the following features (4):
- 1 or more fully reversible aura symptoms (visual, sensory, speech, motor, brainstem, or retinal)
- At least 2 attacks with the following features:
Gradual development of autonomic aura
Aura that is fully reversible
Aura present < 1 hour
Headache within 1 hour of aura - 1 or more fully reversible aura symptoms (visual, sensory, speech, motor, brainstem, or retinal)
[Neuro/Migraine]
Unusual neurologic forms of migraine? (5)
- Basilar artery migraine
- Hemiplegic migraine
- Ophthalmoplegic migraine
- Confusional migraine
- Benign paroxysmal vertigo of childhood (BPVC)
[Neuro/Migraine]
Which migraine?
Adolescent girls
Vertigo, syncope, dysarthria, visual alterations
Loss of consciousness
Basilar artery migraine
[Neuro/Migraine]
Which migraine?
< 18 months of age
Hemiplegia with or without aphasia for hours or days
Intellectual decline
Hemiplegic migraine
[Neuro/Migraine]
Which migraine?
Between 1 and 4 years of age
Sudden episodes of vertigo for a few minutes
Nystagmus, worsening vertigo with head movements
No postictal state
Self-limited condition, a precursor to migraine (family history of migraine)
Benign paroxysmal vertigo of childhood (BPVC)
[Neuro/Migraine]
Triptan approved for pediatric migraine?
Rizatriptan
[Neuro/Migraine]
Contraindications for Triptans? (2)
- History of transient ischemic attack (TIA), or stroke
- Migraine with brainstem aura, or hemiplegic migraine
[Neuro/Migraine]
Prophylaxis treatment for migraine? (6)
- Topiramate
- Cyproheptadine
- Valproate
- Calcium channel blockers
- Propranolol
- Amitriptyline
[Neuro/Headache]
Which headache?
Treatment?
Prophylaxis?
Between 10 and 20 year old
Attacks occur at the same hour each day in 50% of patients
Unilateral, supraorbital, retroorbital, or temporal in location
Severe (described as an “ice pick” or “hot poker”)
Cluster headache
- Treatment:
Oxygen
Triptan - Prophylaxis:
Verapamil
[Neuro/IIH]
Risk factors for idiopathic intracranial hypertension (pseudotumor cerebri)? (5)
- Weight
- Drug
- Diseases
- Obesity
- Oral contraceptive use
- Doxycycline or tetracycline (headache in an adolescent being treated for acne)
- Hypervitaminosis A Vitamin A analogs, such as retinoic acid
- Primary adrenal insufficiency, (a.k.a. Addison disease), sleep apnea, lupus
[Neuro/headache]
Cause of headache?
Headache, Retiobulbar pain
Visual obscurations (brief episodes of blindness) , Photopsia (seeing light flashes), Diplopia
Tinnitus
Intracranial hypertension (pseudotumor cerebri)
[Neuro/Headache]
Red flags (symptoms) requiring CT or MRI for a child with a headache? (9)
- Location
- Age
- Duration
- Time of the day
- Sleep
- Severity
- Associated symptoms
- Type of headache
- Occipital headaches
- Any child < 3 years with chief complaint of headache
- Persistent focal headaches
- Early morning headaches with increase in frequency and severity
- Headache that awakens the child from sleep
- Increasing or “crescendo” headaches
- Headache with focal seizure
- Unexplained academic decline or behavioral changes
- Cluster headaches
[Neuro/Headache]
Red flags (Physical signs) requiring CT or MRI for a child with a headache? (5)
- Growth parameters
- Eye
- Maneuver
- Abnormal neurologic signs
- Fall-off in growth
- Increase in head circumference
- Papilledema
- Increase in severity of headache with Valsalva maneuver
[Neuro/NM/MG]
Types of myasthenia gravis? (3)
- Transient neonatal myasthenia gravis
- Congenital myasthenia gravis
- Juvenile myasthenia gravis
[Neuro/NM/MG]
Which neuromuscular disease?
Newborns within 3 days
Weakness, ptosis
Resolves in 2-4 weeks
Exposed to transplacental passage of maternal acetylcholine receptor antibodies
Transient neonatal myasthenia gravis
[Neuro/NM/MG]
Which neuromuscular disease?
Treatment?
Teenage years
Gradual, worsening muscle weakness, fatigability, ptosis and ophthalmoplegia, respiratory compromise
Muscle weakness by repetitive muscle use
Juvenile myasthenia gravis
(Acquired autoimmune disorder, Circulating autoantibodies to AChRs)
- Treatment:
Anticholinesterase medications (pyridostigmine)
[Neuro/NM/MG]
Antibodies associated with myasthenia gravis? (2)
- Acetylcholine receptor autoantibodies
- The muscle-specific receptor tyrosine kinase
[Neuro/NM]
Diagnosis?
Treatment?
Ascending acute paralysis evolving to respiratory and cranial nerves
Loss of vibratory and positional, not sensory (rarely)
Hyporeflexia, but Babinski normal
Less autonomic instability
Guillain-Barre syndrome
- Treatment:
IVIG
Plasmapheresis
[Neuro/NM/GBS]
Commonly associated viral/bacterial cause of Guillain-Barre syndrome? (3)
- Campylobacter (up to 30%)
- Mycoplasma
- EBV
[Neuro/NM/GBS]
Recovery time for Guillain-Barre syndrome?
6 months
[Neuro/NM]
Diagnosis?
Charcot-Marie-Tooth disease
(Hereditary motor sensory neuropathy)
[Neuro/NM/Botulism]
Common dietary/environmental causes of botulism? (3)
Environmental dust
Commercial carrot juice and cheese sauce
Wound (for heroin ‘black tar’ user)
[Neuro/NM]
Diagnosis?
Treatment?
Descending paralysis from cranial nerve weakness
Hypotonia, ptosis, drooling, Dysphonia, dysphagia, diplopia, feeding difficulties
Poor gag reflex, no deep tendon reflex, lack of pupillary reflex
Infant botulism
- Treatment:
< 1 year, human-derived botulism immunoglobulin
> 1 year, equine serum botulism antitoxin
[Neuro/NM/Botulism]
Antibiotics that can worsen botulism?
Aminoglycoside (gentamicin) that can potentiate the paralytic effects of the toxin
[Neuro/NM]
Diagnosis?
Diagnostic test (2)?
Both side of the spinal cord, 3 or 4 segments, mostly thoracic cord
Severe back pain radiating around to the front
Motor and sensory abnormalities
Progressive paraparesis, loss of sphincter tone, sensory loss
Transverse myelitis
- Test:
Gadolinium-enhanced MRI
Lumbar puncture
[Neuro/NM]
Diagnosis?
CSF finding?
Adolescent
Optic neuritis: Vision abnormalities, oculomotor disturbance
Incoordination, sensory deficits
Multiple sclerosis
- CSF:
IgG or oligoclonal bands
[Neuro/Ataxia]
Diagnosis?
Acute ataxia between 1 and 3 years old
Prior URI or viral GI illness
Hypotonia, tremor, horizontal nystagmus, dysarthria
Acute cerebellar ataxia
[Neuro/NM/MS]
Associated anomaly with myasthenia gravis?
Thymic hyperplasia or thymoma
[Neuro/NM/DMD]
Muscle biopsy finding in Duchenne muscular dystrophy? (2)
Type 2B fiber deficiency
Absent dystrophin
[Neuro/Seizure/Febrile]
Simple febrile seizure criteria? (5)
- Duration
- Recurrent
- Type of seizure
- Age
- Comorbidities
Last < 15 minutes
Not recurrent in a 24-hour period
Generalized in nature
Between 6 months trough 5 years of age
Developmentally normal child
[Neuro/Seizure/Febrile]
Complex febrile seizures criteria? (3)
- Duration
- Recurrent
- Seizure type
Last ≥ 15 minutes
> 1 episode in a 24-hour period
Demonstrate a focal symptomatology
[Neuro/NM]
Diagnosis?
Onset of symptoms varied widely, from 5 to 60 years old
Muscular dystrophy symptoms
Becker muscular dystrophy
[Neuro/NM]
Diagnosis?
Treatment?
Acute paralysis of 1 or more limbs (bilateral in transverse myelitis)
Preserved sensation, Normal mental status
Typically within a week of viral symptoms
Recovery is variable and often incomplete
Suspected cases should be reported to the CDC with samples sent for viral testing
Acute flaccid myelitis
- Treatment:
supportive