Shared Flashcard Set

Details

Opt 637 CNS Exam 1
Dr Smith Lecture 5
67
Medical
Graduate
09/12/2011

Additional Medical Flashcards

 


 

Cards

Term
Can seizures be well controlled?
Definition
Yes
Term
Can seizures be well controlled with a single drug?
Definition
Usually, yes
Term
Can seizures be eliminated in epilepsy w/ tx?
Definition
Not always
Term
How often should poorly controlled epileptics have a medical exam?
Definition
Every 2-4 weeks
Term
How often should well controlled epileptics have a medical exam?
Definition
Every 3-12 months
Term
What is the risk of suicide in epileptics?
Definition
3x greater; greatest risk in 6 months following diagnosis
Term
Are anti-epileptic drugs associated with increased suicide ideation?
Definition
yes
Term
What is the risk of sudden death in epilepsy?
Definition
Sometimes caused by hypoventilation and arrythmias
Term
What is the increase in risk of drowning with epilepsy?
Definition
20x greater than the general population
Term
What % of pregnant epileptics will have a normal pregnancy?
Definition
90.00000%
Term
What is the risk of birth defects in epileptics due to?
Definition
drug treatment, not the dz itself
Term
When can epileptic meds be discontinued?
Definition
Only if seizure free 2-5 years on medications
Term
What is the risk of recurrence for an average epileptic with a normal neurologic exam?
Definition
25.00000%
Term
What is the time interval to wean epileptics off of their drug regimen?
Definition
6 weeks
Term
If an epileptic is taken off of meds and then seizures recur, what is the course of action?
Definition
restart meds at previously effective level
Term
When can epileptics be allowed to drive?
Definition
Depends on state. Some require 2 months, some 2 years
Term
What is Bell's Palsy?
Definition
sudden unilateral facial paralysis due to block of CN7
Term
Are men or women more prone to Bell's palsy?
Definition
Niether, both equally affected
Term
How long can it take for Bell's Palsy to reach full paralysis?
Definition
May progress over a few weeks, can be much faster
Term
In Bell's Palsy, is the left or right side more prone?
Definition
Neither, both sides equally affected
Term
What often precedes Bell's Palsy?
Definition
70% have preceding upper respiratory infection.
Term
What can Bell's Palsy be a precursor to?
Definition
pre-diabetic state
Term
What is the occurrence of diabetes in Bell's Palsy pts?
Definition
2x greater than non diabetics
Term
What is the nasolabial fold?
Definition
The crease in the face that is relaxed in Bell's Palsy
Term
Where is the pathology of Bell's Palsy generally focused?
Definition
The stylomastoid foramen that CN7 passes through compresses the nerve after inflammation of the nerve
Term
If Bell's Palsy presents as just a partial paralysis, what should be considered?
Definition
tumors
Term
What are s/sx of Bell's palsy?
Definition
face looks asymmetric

pain behind ear a day or two before palsy

tinnitus possible

ipsilateral lacrimation

decreased taste sensation possible

unilateral facial weakness of both upper and lower muscles*
Term
What infection is commonly seen with Bell's Palsy?
Definition
Herpes, both Simplex and Zoster
Term
Why can't Bell's Palsy pt's close their eyes?
Definition
CN7 closes the eye, while CN3 opens it, so eye stays open. Must be treated to prevent or manage dryness keratitis
Term
What should be performed on Bell's Palsy pt's?
Definition
Complete screening neurologic exam

Screen for HSV and HZV

Check for Lyme's Dz (erythema migrans)

electroneurography and electomyography

consider syphilis, DM, Lyme, and thyroid deficiencies
Term
What is the average time frame for Bell's Palsy onset?
Definition
7-10 days
Term
What % of Bell's palsy pt's will show some sign of recovery at 3 weeks?
Definition
85.00000%
Term
When is full recovery expected in Bell's Palsy?
Definition
6 months
Term
What % of Bell's Palsy pt's will NOT see any recovery?
Definition
4-6%
Term
What indicates a poor prognosis for Bell's Palsy?
Definition
if severe pain at onset and complete palsy when pt first seen
Term
Are Bell's Palsy recurrences on the same, or opposite side?
Definition
Can come back on either side
Term
What are meds in Bell's Palsy intended to do?
Definition
Prevent nerve degeneration
Term
When should Bell's Palsy be treated?
Definition
ASAP
Term
When should Bell's Palsy pt's be re-evaluated after initial dx?
Definition
1 week
Term
What is used to treat Bell's Palsy?
Definition
prednisone for 3-5 days, taper off over next 7 days

acyclovir regimen for 10 days
Term
Cereberovascular dz causes what level of death in the U.S.?
Definition
3rd leading cause of death, most common disabling neurologic disordre
Term
What is a TNA?
Definition
transient neurological attack, often precede cerebrovascular dz.

May be confusion, dizziness, fainting, 'having a spell'. To be considered nonfocal, must be very general. A seizure would be a focal event
Term
What is a focal vs nonfocal neurologic attack?
Definition
non focal are confusion, dizziness, fainting.

Focal would be seizure, or other acute issue
Term
What does focal neurolog loss of function usually follow?
Definition
67% secondary to ischemia

33% secondary to hemorrhage
Term
What are risk factors for cerebrovascular dz?
Definition
atherosclerosis and HTN, smoking, alcoholism
Term
Even if HTN is controlled in 50s and 60s, can HTN that was uncontrolled in 30s and 40s increase risk of cerebrovascular dz?
Definition
yes
Term
What are underlying pathologies that can lead to cerebravascular dz?
Definition
congenital aneurysms

vascular inflammations

cardiac and hematological disorders

Anything that inhibits O2 reaching the brain
Term
What does TIA stand for?
Definition
Transient Ischemic Attack
Term
What is a common ocular SE of a TIA?
Definition
Loss of vision (hemianopsia, etc), therefore OD's are often first to see pt's after a TIA
Term
How long do TIA's often last?
Definition
usually a few minutes to an hour. If lasts less than 24 hours, than is a TIA by definition
Term
How serious are TIA's?
Definition
Just as serious as a stroke. Generally indicates a serious underlying pathology
Term
What % of pt's will suffer a stroke within 3 months of a TIA?
Definition
10.50000%
Term
What % of TIA pt's who will progress to a stroke will have the stroke in the week following the TIA?
Definition
63.00000%
Term
What % of TiA pt's who will progress to a stroke will have the stroke in the month following the TIA?
Definition
85.00000%
Term
How is a TIA-to -stroke prediction made?
Definition
"ABCD^2"

A = age
B = BP
C = Clinical features
D^2 = DM and Duration of TIA
Term
In a TIA-to-Stroke prediction, what s/sx indicate worse prognosis?
Definition
unilateral weakness

speech impairment

duration

DM
Term
In the TIA-to-Stroke prediction model, what is considered a high risk for stroke?
Definition
If the pt displays 6-7 points worth of risk factors
Term
In the TIA-to-Stroke prediction model, what is considered a moderate risk for stroke?
Definition
If the pt displays 4-5 points worth of risk factors
Term
What are lifestyle TIA tx's?
Definition
Control HTN, DM, and lipids

stop smoking

lose weight and exercise
Term
What are drug tx's for TIA's?
Definition
Aspirin or Aggrenox (ASA and dipyridamole)

ticlopidine or clopidogrel if allergic to ASA

statins
Term
What are Reversible Ischemic Neurological Deficits?
Definition
If the TIA s/sx last more than 24 hours, but full recovery is seen
Term
What is a completed stroke?
Definition
sustained ischemic event leading to irreversible neurological dysfunction
Term
What are risk factors for stroke?
Definition
TIA

DM

Migraine w/ aura

Valve dz's (vegetations can break off and throw a blockage into CV system)

HTN

Smoking

Family MHx

Carotid atherosclerosis
Term
Carotid atherosclerosis leads to what % of ischemic strokes?
Definition
20-30%
Term
What kind of stroke does carotid atherosclerosis increase occurrence for?
Definition
anterior circulation strokes, but not posterior circulation strokes
Term
What level of carotid atherosclerosis will lead to a risk for stroke of 2% per in a given year?
Definition
>60%
Term
What ocular s/sx can indicate inreased risk of stroke?
Definition
Hypertensive retinopathy
Supporting users have an ad free experience!