Neuro Flashcards
Sumatriptan
Analgesic, HA abortive
MOA:
- Serotonergic -> vasoconstricion
- t1/2 = 2hrs
SE’s
- Chest/neck tightness
- flushing, sedation
- Serotonin syndrome in SSRI/SNRI/MAOI/other triptans
Ergotamine Tartrate
Analgesic, HA abortive
MOA:
- Sertonergic, adrenergic, dopaminergic - suppress neurogenic inflammation]
- vasoconstriction
SE’s
- Narrow therapeutic window
- vasoconstriction
- hallucinations
- No Pregnancy
Dihydroergotamine
Analgesic, HA abortive
MOA:
- Sertonergic, adrenergic, dopaminergic - suppress neurogenic inflammation]
- vasoconstriction
SE’s
- Narrow therapeutic window
- vasoconstriction
- hallucinations
- No Pregnancy
Propranaolol
HA prophylaxis, Anyihypertensive, Beta-blocker
MOA:
- Inhibits CSD
- good for MVP, HTN, anxiety, tremor
SE’s
- Bad w. depression, fibromyalgia, Raynaud’s, asthma
Amitriptyline
HA prophylaxis, Antidepressant
MOA
- Tricyclic antidepressant
ClinUse:
- good in sleep disturbance, neck pain, T-T headache
- Inhibits CSD
SE’s
- Weight gain, sedation, dry-mouth, orthostatic hypotension
Valproic acid
HA prophylaxis, Anticonvulsant, mood stabilizer
MOA:
- not well understood
- ?Na channel blocker, GABA, Ca, K effects?
- Enhances GABA activity,
- reduces excittory NT,
- reduces serotonergic activity
Metabolism:
- Hepatic metabolism
- NOT inducer
- T1/2 15h
Clin Use
- PO/IV
- All seizure types
- Migraine
- BPD
SE’s:
- +++ Weight Gain; occasional
- GI upset
- menstrual problems,
- Hair loss
- thrombocytopenia
- hepatic encephalopathy w/out elevated enzymes (elevated NH4+) Tx. carnatine
- Birth defects (spina bifida)
Topiramate
HA prophylaxis, Anticonvulsant
MOA:
- Multiple - Na channel blockade
- GABA agonist
- Glu antagonist
- Reduces neuron firing in TNC & inhibits CSD
Met:
- Renal excretion unchanged
- t1/2 = 24h
Clin Use:
- Broas specturm; no good vs absence
- chronic migraine prophylaxis
- neuropathic pain
- weight loss
SE’s:
- sedation
- aphasias
- parasthesias
- nephroliths
- glaucoma
- weight loss
- cognitive difficulty
Verapamil
HA prophylaxis, antihypertensive Ca entry blocker
MOA:
ClinUse:
SEs:
- constipation
- heart block
- depression
- weight gain
Lithium
HA prophylaxis, mood stabilizer
BoTox
HA prophylaxis
MOA:
- Prevents synaptic vesicle fusion w/ nerve terminal;
- prevenst ACh/Glu/CGRP release
ClinUse:
- Best for chronic migraine
SE’s:
- Neck pain
- weakness
- ptosis, diplopia
- Spock eyebrow
- flu-like illness
Phenobarbital
Anticonvulsant, sedative-hypnotic
MOA
- GABA agonist -> opens Cl channels -> hyperpolerization
Metabolism
- 100 hr T1/2
- Loading dose required
- Hepatic metabolism and enzyme inducer
Clinical use
- All seizure types except absence
- PO/IV for status epilepticus
Side Effects
- Hyperactivity in peds
- Sedation in adults
- Joint/CT problems
Phenytoin
Anticonvulsant
MOA
- Blocks voltage gated Na channels
Metabolism
- Hepatic met and Enzyme inducer
- Zero order Kinetics at high doses; OD with small changes
- T1/2 variable (6-24h)
Ethosuximide
Anticonvulsant
MOA:
- Blocks T-type Ca channels
Metabolism;
- hepatic metabolism
- Mild hepatic induction
Clin Use
- Absence Seizures
- PO
- 1st line by PCP
SE’s
- Sedation
- GI distress
- behavior change
Benzodiazepines
Anxiolytic, sedative, amnestic, anticonvulsant, skeletal muscle relaxant
Carbamazepine
anticonvulsant, mood stabilizer
MOA:
- Na channel blocker
Metabolism
- hepatic met, enzyme inducer
- short t1/2 = 12h
- Levels increased by Ca channel blockers & macrolides
Clin Use:
- Focal and 2nd generalized seizures
- cheap
- PO only
- mood stabilizer for BPD, neuropathic pain, trigeminal neuralgia
SEs
- Blurred vision
- sedation
- neutropenia
- hyponatremia
- weight gain
*
Gabapentin
Anticonvulsant
MOA:
- Increases GABA levels in brain
- blocks Na post synaptically
Metabolism:
- v. short T1/2
- not metabolized/inducer/inhibitor
- urinary excretion unchanged
Clin Use
- peripheral neuropathy
- partial & secondarily generalized seizures
- PO only
SE’s
- sedation (esp in elderly)
- GI distress
- pedal edema
Lamotrigine
Anticonvulsant, mood stabilizer
MOA:
- blocks pre-synaptic Glu release
- Blocks Na channel post synaptically
Metabolism:
- Hepatic metabolism
- Renal Excretion
- t1/2 = 24h
Clin Use:
- Broad specturm vs all seizure types
- neuropathic pain
- BPdisorder
- PO only
SE’s:
- Allergic rash
- insomnia
Levetiracetam
Anticonvulsant
MOA:
- Ca channel blocker
- blocks vesicle exocytosis
Met:
- Urinary excretion, unchanged
- Not enzyme inducer
- Not protein bound
ClinUse:
- Broad spectrum, focal & generalized
- equivelent PO/IV dosing
- Favorite of hospitals
SE’s
- Cognitive and Behavioral sx
*
Aspirin
Analgesic, antipyretic, anti-inflammatory
MOA:
- irreversibly inhibits COX
- lasts 10-14 days in platelets
- analgesia via COX-2
- Side effects by COX-1
ClinUse
- Very goor for inflammatory & somatic pain
- NO 3rd trimester pregnant women
- Close DA of fetus
- APAP instead
- Kids = APAP
- Elderly
- hypoalbuminemia -> toxicity, longer t1/2
ADR:
- Reyes Syndrome in kids
- Hepatotox
DDI:
- Lithium
- Warfarin
ibuprofen
Analgesic, antipyretic, anti-inflammatory
Naproxen
analgesic, antipyretic, anti-inflammatory
Oxaprozin
analgesic, antipyretic, anti-inflammatory
MOA:
- concentrates in synovial fluid
- Non-selective COX inhibitor
- NFkB metalloprotease inhibitor
- t1/2 = 40-60h
ClinUse:
- Orthopedic pain
Meloxicam
analgesic, antipyretic, anti-inflammatory
Enolic Acid
MOA:
- COX2 preferential
- t1/2 =20h
Clinical Use
- good for hepatic/renal fail; no need to adjust
AE:
- Fewer GI effects than piroxicam, diclofenac, naproxen
Celecoxib
Analgesic, anti-inflammatory
MOA:
- COX-2 selective inhibitor
ClinUse
- Mild - Moderate Pain
AE’s:
- GI bleed (less than non-selectives)
- interacts w/ hepatic enzyme inducers
- decreases ACE-I and diuretic effects
- Increases Lithium levels
- Contranidicate w/ sulfa allergy
- No platelet effects
Ketorolac
Analgesic, anti-inflammatory
MOA:
- Non-selective COX inhibitor
ClinUse:
- Use for < 5 days
- shrot term pain management
- IV/PO
- Good post op; very strong
AE:
- Allergic rxns
- GI effects
- Hepatotox w/ APAP
- renal failure
*
Indomethacin
NSAID
MOA:
- Non-selective COX inhibitor
- concentrates in joints
ClinUse:
- Gout - couple of weeks
- Osteoarthritis
- PDA closure in neonates
AEs:
- High side effects
- short term only
Diclofenac
NSAID
MOA:
- COX-2 Selective
- Concentrates in joints
ClinUse:
- Post-op pain relief
- Topical
AE:
- monitor for hepatotox
Acetaminophen
Analgesic, antiypyretic
APAP
MOA:
- unclear mech
- central prostaglandin synthesis
- no-antiplatelet activity
- active 4-6hrs
ClinUse:
- Not Anti-Inflammatory
- chronic pain, used w/ NSAIDS
AE’s:
- Narrow therapeutic window
- fatal hepatotox via glutathione depletion
- depression, chronic pain, EtOH/drug use, multiple NSAID use
- Hepatotox
- No EtOH
Morphine
Analgesic, drug of abuse
MOA:
- mu opioid receptor agonist
ClinUse:
- can be used w/ hepatic failure
- prolonged t1/2
-
Avoid w/ GFR < 30ml/min
- toxic metabolite accumulation
AEs:
- Sedation confusion, constipation
- resp depression, sexxual dysfunction
- fracture, physical dependence
- infection, tumor
- Additeve w/ CNS depressants
- MAOIs - severe/fatal rxn
Meperidine
Analgesic
MOA:
- mu opiod receptor agonist
ClinUse:
- 10x as powerful as morphine
- Not for routine use; severe pain
AEs:
- Mydriasis (all others cause miosis
- MAOI = fatal/severe rxn
- ADRS of morphine + increased HR
oxycodone
Analgesic
MOA:
- mu opioid receptor agonist
- equianalgesic to morphine
- t1/2 = 2-3h
- To oxymorphone 2D6
- To noroxycodone 3A4
ClinUse:
- acute pain
AE:
- Additive w/ CNS depressants
- abuse deterent formula
- ADRS of morphine
*
Oxymorphone
Analgesic
MOA:
- 2x morphine strength
- metabolic end product of morphine
ClinUse:
- Acute pain
AR:
- high abuse potential
- morphine like ARs
Hydromorphone
Analgesic
MOA:
- mu opiod agonist
ClinUse:
- 7.5x potent as morphine
- avoid sustained release w/ hepatic disease
- not for renal disease;
ARs:
- Morphine like
Methadone
Opioid abuse
MOA:
- mu opioid agonist (levo)
- NMDA receptor antagonist (dextro)
- SRI
- t1/2 = 8- 47h
ClinUse:
- Severe pain (chronic)
- addiction
- caution in elderly
- dont increase more than q14day
- variable potency - dose dependent
AR:
- morphine ADRs
- long QTc
- arrhythmia
- baseline EKG
Fentanyl
analgesic
MOA:
- mu opioid agonist
ClinUse:
- 80x strong as morphine
- patch for severe pain
- liver disease decreases absorption
- Ok renal disease
AE:
- additive w/ CNS depressants
*
tramadol
analgesic
MOA:
- modulation of nociception
- inhibits NE/5HT reuptake
ClinUse:
- Chronic pain
AE:
- don’t combine w/ SRI’s (eg methadone or ADDs)
Tapentadol
Analgesic
MOA:
- modulation phase
- inhibits NE/5HT reuptake
ClinUse:
- severe pain
- neuropathic pain (v.strong)
AE:
- Morphine ADR
- dont combine w/ SRIs (eg methadone ADDs)
Naloxone
Opioide overdose
MOA:
- competitivly blocks mu, kappa, delta opioid receptors
ClinUse:
- rapidly reverse opiod agonists
- opiod OD, dependence
AE:
- can precipitate withdrawal in dependent persons
Codeine
Analgesic
Buprenorphine
Opiod
Marijuana
Pain, chronic pain, weight loss, Cancer, MS, HIV
Bupivicaine
Long acting local anesthetic
MOA:
- amide - binds Na channel of inner nerve membrane
- closes Na channel -> no AP
- Better in non-ionized form (not acidic places)
- Best on narrow, heavily myelinated, rapid firing neurons
- partial liver metabolism
ClinUse:
- Inj - long acting local anesthetic
- w/ Epi for prolonged duration
AE:
- Most toxic of the ‘caines
- Cardiac arrest if IV
- light headed, tinnitus, metallic taste
- blurred vision, numbness, twitching
- convulsions
- Resuscitative equipment available
- delay in mgmt => acidosis, cardiac arrest, death
- longest acting 12-18h
*
Ketamine
Sedative hypnotic
Nitrous oxide
dissocidative anesthetic
Sevoflurane
General anesthetic
Isoflurane
General anesthetic
Propofol
General anesthetic
MOA:
- lipid soluble IV agent
- GABAa potentiation
- blocks Na channels
- impacts endocannabinoid system
ClinUse:
- IV short acting anesthetic
- anti-emetic
- euphoria
- Aseptic technique - susceptible to bacterial contamination
- single use parenteral
AE:
- injection site pain
- apnea
- decreased CO
- hypotension
Midazolam
Conscious sedation
MOA:
- GABAa potentiation; enhances effects
ClinUse:
- IV bzd - for hospital sedation
- General anesthetic adjuvant
- 15-20min duration
AE:
- resp depression
- addiction, tolerence (error risk)
- CV depression
- caution with ER formulation
Etomidate
sedative-hypnotic
MOA:
- GABAa modulator at B3 subunits
- Hepatic metabolism
ClinUse:
- IV general anesthetic
- non-analgesia
- t1/2= 75min
AE:
- CV and resp depression
- skeletal muscle movements
- laryngospasm
- shock
Remifentanil
Analgesic
MOA:
- Opioid receptor agonist
ClinUse:
- IV - opioid
- analgesic and sedative
- short acting - t1/2 = 4min
- immdiate emmergence
Lidocaine
Local anesthetic
MOA:
- medium-acting
- amide - binds Na channel of inner nerve membrane
- closes Na channel -> no AP
- Better in non-ionized form (not acidic places)
- Best on narrow, heavily myelinated, rapid firing neurons
ClinUse:
- local anesthesia
- Epi to prolong action
AEs:
- seizures
Phenobarbital
Anticonvulsant, sedative-hypnotic
MOA
- GABA agonist -> opens Cl channels -> hyperpolerization
Metabolism
- 100 hr T1/2
- Loading dose required
- Hepatic metabolism and enzyme inducer
Clinical use
- All seizure types except absence
- PO/IV for status epilepticus
Side Effects
- Hyperactivity in peds
- Sedation in adults
- Joint/CT problems
Tetracaine
Local Anesthetic
MOA:
- amide - binds Na channel of inner nerve membrane
- closes Na channel -> no AP
- Better in non-ionized form (not acidic places)
- Best on narrow, heavily myelinated, rapid firing neurons
- AChE metabolism
ClinUse:
- Inj - long acting local anesthetic
- w/ Epi for prolonged duration
Chloroprocaine
Local Anesthetic
Short-acting
MOA:
- amide - binds Na channel of inner nerve membrane
- closes Na channel -> no AP
- Better in non-ionized form (not acidic places)
- Best on narrow, heavily myelinated, rapid firing neurons
- metabolized by AChE
ClinUse:
- Inj - short acting local anesthetic
- w/ Epi for prolonged duration
- short acting; 30-60mins
AE:
- safest ‘caine
*
Sucinylcholine
Depolarizing neuromuscular blockade
MOA:
ClinUse:
- Induction agent
- facilitate paralysis for intubation
AEs:
- Disassociate them first
Rocuronium
Non-depolarizing neuromuscular blockade
MOA
ClinUse:
- Intubation
- surgical paralysis
AEs:
- disassociate first
Desflurane
General anesthetic
MOA:
- inhaled hydrocarbon
ClinUse:
- surgical anesthetic
AEs:
- delayed emergence
- delirium
- N/V
Dexmetomidine
Anesthetic adjunct
MOA:
- a2 agonist
- dose dependent analgesia and sedation
ClinUse:
- Reduce side effects from high-dose inhalation agents
- can be used alone for minor procedures
AEs:
*
Isoflurane
General anesthetic
MOA:
- inhaled hydrocarbon
ClinUse:
- surgical anesthetic
AEs:
- delayed emergence
- delirium
- N/V
Sevoflurane
General anesthetic
MOA:
- inhaled hydrocarbon
ClinUse:
- surgical anesthetic
AEs:
- delayed emergence
- delirium
- N/V
Neostigmine
Paralytic reversal
MOA:
ClinUse:
- Reverses muscle relaxants
AEs: