Exam 3 THIS ONE Flashcards
What is initial insomnia?
difficulty falling asleep
What is the treatment for initial insomnia
Short acting benzodiazepines
Sometimes trazodone and doxepin are used off label for their sedating effects
What is middle insomnia?
Difficulty staying asleep
What is treatment for middle insomnia?
Longer acting benzos
DORAs
What is terminal insomnia?
Early morning waking.
What is the treatment for terminal insomnia?
If r/t depression - SSRI or SNRI
DORAs
What are beta fiber neurons?
Sensory nerve fibers responsible for transmitting signals related to touch and pressure sensation (mechanoreception) to the CNS -
non=noxious/feather
Relatively large and myelinated which allows for a faster transmission of signals.
How fast are beta fiber neurons?
Due to myelination - moderate speed
What are delta fiber neurons?
Transmit pain and temperature sensations (nociception and thermoreception) from the periphery to the CNS.
noxious mechanical and subnoxious thermal stimuli
How faster are delta fiber neurons?
Slower than beta fibers.
They are myelinated but are thinner and smaller than beta fibers.
What are C fiber neurons
unmyelinated
chemical and noxious heat
SLOW CHRONIC PAIN SIGNALS
NO MYELINATION - chronic pain
How fast are C fiber neurons
unmyelinated - SLOW
What is peripheral neuropathy
Dmg to peripheral nerves –> abnormal sensory signals sent to CNS
Central sensitization
Difference between neuropathic pain and nociceptive pain.
Nociceptive pain is caused by tissue injury or inflammation.
Neuro pain is caused by dmg to the nerves.
Neurotransmitters and receptors in peripheral neuropathy
glutamate and substance P
Non pharm approaches to peripheral neuropathy
TENS units, CBT, physical therapy
Pathophysiology of chronic pain
Peripheral sensitization - occurs in the peripheral nervous system, where nociceptors (pain receptors) become sensitized and more responsive to painful stimuli. Is often associated with inflammation or nerve dmg and leads to increased pain sensitivity in the affected area.
Central Sensitization: changes in the CNS. CNS becomes hypersensitive - amplifying pain signals and reducing pain threshold. As a result non-painful stimuli can be perceived as painful. The can remain after inflammation or initial injury has healed.
allyodynia
pain due to stimulus that does not normally provoke pain
What causes narcolepsy
not enough orexin
Medication for narcolepsy
Modafinil
What is the pathophysiology of anxiety?
Amygdala - Fear/Panic/Phobia
CSTC - Worry/Anxious/Obsession
Hippocampus - Memory/Internal fearmonger - re-experiencing
What is the antidote to benzo overdose?
Flumazil
What is the antidote to opiates?
Naloxone
How does caffeine promote wakefulness?
Caffeine is an antagonist at adenosine receptors
What is peripheral neuropathy
Peripheral tissue injury with central distribution
Tx for peripheral neuropathy
Cymbalta
Elavil
Gabapentin - always use when trying to take off alcohol
lyrica
Allodynia
Pain due to something that shouldn’t cause pain
Patho of chronic pain
Moves from peripheral process to Central sensitization
Anxiety pathophysiology
SEE A BEAR → amygdala is stimulated → sympathetic nervous system stimulated → hypothalamus stimulated → stimulates anterior pituitary gland → cortisol is released → catacholimines are released (epinephrine) → energy/rediness to run for your life
Benzo overdose antidote
Flumazenil
Benzos can treat insomnia in …
PTSD
Alprazolam info
high potency due to high allosteric modulation
short half life, low volume distribution
Amitriptyline SE
anticholinergic SE
H1, M1, Alpha1
voltage-gated sodium channel blockade - cardio toxicity
Amitriptyline treats what
2nd line for fibromyalgia and neuropathy
low dose - insomnia
Buspirone MOA, How to use
5HT1A partial agonist
– Binds to pre - helps with depression
– Binds to post - it inhibits serotonin - helps with anxiety
– Adjunct for anxiety with SNRI or SSRI
– 3-4 weeks before you can feel it
– Not a PRN, 3-4 x/day
Buspirone helps what SE of SNRI/SSRI
decreases sexual SE
Cyclobenzaprine MOA, indications
5HT2A antagonist
Used for: Skeletal pain, muscle spasms
Cyclobenzaprine ADR
glaucoma and heart attack
Diazepam half life etc and used for
High half life, high volume distribution → NOT VERY DEPENDANT
Used for: ETOH detox
Duloxetine SE and when not to use
SE: BP
Hard on liver
Lorazepam key points
gentle on the liver
moderate benzo
Melatonin - when is it used and where is it released from
initial insomnia
Pineal gland when it’s dark
Milnacipran - drug class and what does it treat
SNRI
1st line treatment for fibromyalgia
Modafinil- drug class and what does it treat
TCA
narcolepsy
Modafinil MOA
increases histamine to increase wakefullness
inhibits dopamine reuptake
Naloxone - what labs
check LFT first
Paroxetine treats what and how
joint pain/arthritis
suppresses T cells
M1 receptors - sleep
Pregabalin and gabapentin MOA
binds to OPEN voltage-sensitive calcium channels – preventing the release of glutamate
pregabalin and gabapentin used for
neuropathy and fibromyalgia
SS of benzo OD
lethargy, ataxia, confusion, coma, respiratory depression
Benzos ok in liver failure and ETOH withdrawal
Out The Liver
Oxazepam
Temazepam
Lorazepam
Alprazolam
short half life
Belsomra MOA
Antagonism of orexin receptors (Orex 1 and 2)
Benzos for ETOH detox
- Diazepam, lorazepam
Benzos work BECAUSE they both work on GABA
Z drugs and food
Take 3 hrs away from food
Amygdala
fear
Hippocampus
Memory/flashback
– PTSD
worry
– anxious misery
Parabrachial nucleus
Breathing symptoms with panic attack
Periaqueductal gray
fight/flight
Pineal gland
Secretes melatonin in response to darkness
Prefrontal cortex
Anxiety
Pain
Thalamus
Temperature control
Lymbic system
Pain
Hypothalamus
Regulates sleep cycle
it’s on when histamine is going
Neurotransmitters responsible for sleep
GABA, histamine
What areas of the brain are involved with PTSD
Amygdala, hippocampus, and PFC
Short-acting benzos
LOT
Lorazepam, oxazepam, temazepam
Treatment for PTSD
Paroxetine and Sertraline
DORAs MOA
Dual Orexin Receptor Antagonist
– Block orexin signals in the brain
– Need 8 hrs for sleep after
– Good options for middle and terminal