Neuro l Flashcards
CNS imaging of choice unless it’s suspected meningitis, then do what?
MRI
lumbar puncture
Cholinergic agonist indic for Glaucoma that acts on muscarinic-R
pilocarpine
nicotine binds to ______ and induces what enzyme?
nicotinic-R
CYP1A2 - caffeine, theophylline, TCA’s, warfarin
Overdose of Antipsychotics is called -_________
What is tx?
Neurolyptic Malignant Syndrome
Bromocriptine (dopamine agonist)
Antipsychotics MOA
ADR’s
decrease dopamine
ADRs: tremors, tardive, blurred vision, hypotension, constipation, dry mouth, urinary retention, sexual dysfxn, drowsy, PROLACTIN
Antipsych indic for psychosis, N/V, hiccoughs
prochlorperazine
decrease dopamine
ADR: PROLACTIN, tremors, tardive, etc.
injectable Antipsychotic indic for Psychosis, Tourettes, Huntingtons
Haloperidol
+ H1 blockade so extra powerful!
Indic for psychosis, schizo, bipolar
Caution in children
Respiradone
oral
p450
No dopamine blocking are what category of antipsychotics
Atypical
Why use SAM-E
used to make excitatory neurotransmitters
Cocaine, Buproprion, Amphetamine, Benzatropine all do what?
block reuptake of dopamine so more dopamine around
tricyclic and amphetamines all do what?
block reuptake of NE
indic for depression, narcolepsy, phobias, and parkinson’s
MAO-I
MAO-I MOA and drug?
block metabolism of dopa, NE, SE
suppresses REM sleep
phenelzine (nardil)
What drug can increase seizure threshold and increases NE and DOPA
bupropion
SSRI’s
fluoxetin (prozac) sertraline paroxetine - paxil citalopram - celexa Lexapro
What AA can you use when tapering off or on SSRIs?
tryptophan
Non-SSRI used for sleep commonly but ironic withdrawal sx
trazadone
- rebound insomnia
SE syndrome
look sick
F, hyperreflexia, BP changes, coma, death
enhance serotonin with what supps
B6/niacinamide, trypt, 5HTP
if SSRI’s don’t work can try what drug?
Venlafaxine
modified 5HT effectors, SE & NE
indic for neuropathic pain, fibro
pregabalin (lyrica)
anxiolytic wo sedating or euphoric effects
does not act on GABA
SE, dopa, NE
buspirone
GABA drugs (3): have what kind of effect?
alcohol, barbs, benzos
amnesia effect
Indic for anxiety, wound healing, muscle spasms class of drugs
glycine-R working w chloride
Caution in bipolar Pts because excitatory
long-term tx of seizure drugs
phenytoin, carbamazapine
decrease movement of Na, Ca, K
If first presenting with epilepsy, then must do what first?
MRI to ro tumor
2 Bipolar Drugs
lithium - sodium ions in brain
gabapentin - GABA agonist
LITHIUM ADR
Caution with ____
HYPOTHYROID, coma, KD probs
LOW SODIUM DIET
if a kid is on ritalin (methylphenidate), put them on which supp?
zinc helps the drug to work
DDX encephalitis vs meningitis
enc has a focal neuro deficit whereas menin does not
both have HA, F
DDX GBS with what?
Presentation of guillain barre
Lab
PROG
Botulism - previous hx of flu or viral infxn - leg weakness, paresthesias, DTR's decreased LAB - CSF protein increased Self-limiting disease
GI sxs precede neuro deficits with no F
botulism
floppy baby
MC brain tumor in adults
prog
Gliobastoma multiforme
DEADLY
Wernicke korsakoff syndrome dt what problem?
B1 thiamine
dt booze
no short-term memory
Niacin Xu can cause?
pellagra
3D’s: dementia, diarrhea, dermatitis, death
C/I sumatriptan
Basilar Migraine
base of skull radiatees up
vasoconstricts
Ergots MOA
vasoconstrict - alpha 1
ADR: tachycardia, HTN
Giant Cell Arteritis complication?
Do what test?
blindness - affects ophthalmic A
ESR > 1000
pt wakes up in the AM with HA but then goes outside and is ok
carbon monoxide poisoning
PAIN Relievers
CNS vs Peripheral
CNS: opioids, tylenol
PNS: NSAIDs, steroids, gout meds
Max dose of tylenol in 24 hrs
4 g
5 g of pregn = ___g cortisone
20g
4x
Can you abruptly dc steroids?
no - death
Anesthetic Amides, Ester?
amides - lidocaine, bupivacaine
Esters - procaine
if too much anesthetics, what can happen?
heart block
Can bupivacaine be given via IV?
no. half life is too long
extreme weakness upon extertion, > rest
starts in head
Myasthenia Gravis
ACH-R antibodies
resting tremor disappears at sleep
parkinson’s
Where is damage to brain with PD and Huntingtons?
basal nuclei
PD - dopamine R
HD - GABA-nergic R
progn of Huntingtons Dz
death - die young, dementia
ACh in Brain vs Periphery
memory vs muscle
if syncope do what testing
EKG
Cannabis MOA
dopamine
removes inhibition by GABA neurons
Cocaine MOA
releases dopamine,NE, SE
MDMA MOA
serotonin
LSD MOA
like heavy boots jumping on serotonin R —> hallucinations