Neuro MDT Flashcards
One of the most common medical complaints
Effects 12-16% if the North American population
Headache
How many work days are lost each year from headaches?
150 million
Headaches are rarely caused from what kind of strain?
Rarely caused by refractive error (eyestrain) alone
“Thunderclap” Headache indicates what?
Subarachnoid hemorrhage (SAH)
Absence of headaches similar to the present headache indicates:
CNS Infection
Headache with a fever could indicate:
Meningitis
Headache with rapid onset with exercise
Intracranial hemorrhage associated with a brain aneurysm
Headache with nasal congestion
Could be Sinusitis
Headache with papilledema
Increased intracranial pressure
What are the reasons for imaging a headache
- Recent change in pattern, frequency, or severity of headaches
- Progressive worsening despite therapy
- Focal neurological deficits or scalp tenderness
- Onset of headache with exertion, cough, or sexual activity
- Visual changes, auras, or orbital bruits
- Onset of headache after age 40
- History of trauma, hypertension, fever
Most prevalent headache
“Vice-Like”
Often exacerbated by emotional stress, fatigue, noise, glare
May be associated with neck muscles
Tension headache
Treatment for tension headaches
Ibuprofen 400-800mg PO q 4-6 hrs - Max 2400mg daily
Naproxen 250-500mg PO q 12 hrs
Tylenol 325-1000mg PO q 4-6 hrs, max 4g/24 hours
Intense unilateral pain that starts around the temple or eye
Duration: 15 minutes to 3 hours
Usually occurs “seasonly”
Cluster Headaches
Patient presents with ipsilateral congestion or rhinorrhea, lacrimation, redness of the eye, Horner Syndrome
Associated symptoms of a Cluster Headache
Initial treatment of choice for a Cluster Headache
Inhaled 100% O2 for 15 minutes
Treatment medications for Cluster Headaches
Sumatriptan: 6mg SubQ, repeat 6mg >1 after initial dose
Zolmitriptan: 2.5mg Oral, 2.5 mg >2 hour after dose
Gradual build-up of a throbbing headache
Duration: Several hours
Possible Aura
Family history is often positive
May have associated nausea and vomiting
Migraine
Treatment for acute migraine attacks
Rest in a quiet, darkened room until symptoms subside
Migraine abortive treatment
SubQ Sumatriptan: 6mg
Oral Sumatriptan 25, 50, or 100mg
*50mg has been shown to be the most effective
Oral Zolmitriptan: 2.5mg
When would you prescribe beta blockers, antidepressants, anticonvulsants to treat migraines?
When migraines occur more than 2-3 times a month or associated significant disability
Treatment for concurring migraine symptoms
Promethazine (antiemetic/antihistamine)
Symptoms occur 1-2 days of injury, subside within 7-10 days
Often accompanied by impaired memory, poor concentration, emotional instability, and increased irritability
Post-traumatic Headache
Treatment for Post-traumatic headache
No special treatment required
Simple analgesics are appropriate first line therapy
Present in 50% of patients with chronic daily headaches
Chronic pain or complaints of headache unresponsive to medication
History reveals heavy use of analgesics
Medication Overuse headache
Treatment for Medication overuse headache
Withdraw medication (improvement in MONTHS, not days)
Percentage of the population will have at least one seizure
5-10%
What age is the highest occurrence for seizures?
Early childhood and late adulthood
Recurrent UNPROVOKED seizures
Epilepsy
An abnormal, excessive, hypersynchronous discharge from an aggregate of CNS neurons
Seizure
Seizures happen in young adults (18-35) from:
1) Trauma
2) Metabolic disorders
3) CNS infection
Seizures are commonly found in older adults (>35) from:
1) Cerebrovascular disease
2) Brain tumor
3) Metabolic disorders
4) Degenerative disorders
5) CNS Infection
Preictal phase can have an aura
Focal seizures with retained awareness
One side of the brain is affected
Partial seizures
One part of the brain is affected
Appears to be awake but not in contact with environment, does not respond normally
Patients will have no memory of what occurred during seizure
Focal Seizure with impaired awareness
Involves the entire brain
May or may not lead to alteration of consciousness
Most common type is Tonic-Clonic seizure (grand mal)
Generalized seizure
Seizure phase characterized by sudden muscle stiffening
Tonic
Seizure phase characterized by rhythmic jerking
Clonic
What phase of a seizure will tongue biting occur
Clonic
“Todd paralysis”
Weakness of the limbs
What phase of the seizure will patients have somnolence, confusion or headache that may occur for several hours
May present with “Todd Paralysis”
Postictal phase
What is used to diagnose a seizure?
Video EEG monitoring
What labs are needed after a seizure has occurred?
Electrolytes, LFT, CBC, Finger stick glucose
Treatment for active seizure
Diazepam 5mg IV/IM Q5-10 minutes (do no exceed 30mg)
MEDEVAC Immediately
Seizure lasting more than or equal to 5 minutes or 2+ seizures without recovery in-between is classified as?
Status Epilepticus (EMERGENCY)
Status Epilepticus treatment
- Diazepam 5mg IV/IM
- Valproic Acid 30mg/kg
- Intubation
Not associated with abnormally excessive neuronal activity
Usually there is no postictal phase
Eyes are closed, usually episodes last longer than 2 minutes
Psychogenic nonepileptic seizure (PNES)
Treatment for Psychogenic nonepileptic seizure
Psychotherapy with cognitive behavioral therapy or interpersonal therapy
What are the two major branches from the carotid artery?
Anterior cerebral artery (ACA)
Middle cerebral artery (MCA)
Two vertebral arteries fuse to become what artery?
Basilar Artery
What are the branches of the Basilar artery?
Right and Left Posterior Cerebral Arteries (PCA)
What supplies the Cerebellum and Brainstem with blood?
Basilar Artery
What interconnects the internal carotid and vertebral basilar arteries?
Circle of Willis
An acute neurologic injury that occurs as the result of the interrupted blood flow to the brain
Stroke
Rupture of a blood vessel causing bleeding into the brain and lack of cerebral blood flow leading to ischemia
Hemorrhagic stroke
Blockage of a blood vessel causing lack of cerebral blood flow leading to ischemia
Ischemic stroke
TIA and CVA are subtypes for what kind of stroke?
Ischemic stroke subtypes
What percentage of strokes are ischemic?
80%
The 3rd leading medical cause of death & 2nd most frequent cause of neurological morbidity
Stroke
Risk factors of stroke
HTN, atherosclerosis and age
Obstruction of an artery due to a blockage that forms in the vessel; often due to atherosclerosis
Thrombotic
Obstruction of an artery due to a blockage from DEBRIS that has broken off from a distal area
Embolic
Lack of brain blood flow from decreased systemic blood flow
Systemic Hypoperfusion
What lobe is affected when a patient is having a seizure with VISUAL phenomenons (colors, flashes, scotoma)?
Occipital lobe
What lobe is affected when a patient is having a seizure with PARESTHESIA (tingling, pain, temperature)?
Parietal lobe
What lobe is affected when a patient is having a seizure with hallucinations, epigastric rising, emotions, automatisms, Deja vu?
Temporal lobe
What lobe is affected when a patient is having a seizure with head and neck movements, Jacksonian march, posturing?
Frontal lobe
Episode of neurologic dysfunction caused by focal brain, spinal cord, or retinal ischemia, WITHOUT acute infarction?
Transient Ischemia Attack (TIA)
Episode of neurologic dysfunction caused by focal brain, spinal cord, or retinal ischemia, WITH acute infarction of central nervous system tissue?
Cerebral Vascular Accident (CVA)
What is the only way to determine the difference between a TIA and a CVA?
MRI
What clinical mnemonic is used for clinical manifestations of stroke?
FASTER
FACE drooping or numbness on one side of the face
ARMS - one limb being weaker or more numb than the other side
STABILITY - steadiness on feet
TALKING - slurring, garbled, nonsensical words, inability to respond normally
EYES - Visual changes
REACT - MEDEVAC immediately and note time of symptom onset
What intracranial hemorrhage generally has a gradual onset?
Intracerebral hemorrhage
What intracranial hemorrhage has a rapid response to pain, usually “the worst headache of my life”?
Subarachnoid hemorrhage
What number of patients with ICH have headache, vomiting, decreased level of consciousness?
About Half
Outpouchings and ballooning of artery due to weakness in the vascular wall
Aneurysm
Imaging used for a stroke
Non-contrast CT
MRI
Labs/interventions needed for a suspected stroke patient
- EKG
- O2 Saturation
- Fingerstick blood glucose (FBG)
- CBC
MEDEVAC Immediately
At what Blood pressure levels would you think about lowering a stroke patients BP?
Systolic >220
Diastolic >120
In this case lower the blood pressure by 15% with a Beta Blocker
When can you give Aspirin to a suspected TIA patient?
Thorough Neuro exam reveals no abnormalities and with MO guidance
Where can you find the disposition “Cerebrovascular disease including stroke, transient ischemic attack, and vascular malformation is disqualifying”?
MANMED 15-106
Uncomfortable “creeping, crawling” sensation or “pins and needles feeling” in the limbs, especially the legs
Occurs during periods of inactivity (Evening)
Restless Leg Syndrome (RLS)
Patients with RLS will experience what symptom that may or may not awake them?
Periodic Limb Movements of Sleep (PLMS)
Causes of Restless Leg Syndrome
1) CNS and PNS abnormalities
2) Reduced iron stores
3) Alterations in dopaminergic systems
4) Circadian physiology
5) Neurotransmitter imbalances of glutamate and GABA
PNS abnormality in patients with restless leg syndrome
Hyperalgesia (Increased sensitivity of pain)
What level of sensation do patients with RLS experience?
Deep sensation
What can exacerbate RLS?
Antihistamines
Dopamine receptor antagonists (antinausea - metoclopramide)
Antidepressants like SSRIs and SNRIs