PAIN Flashcards
Provide the 4 steps in the nociceptive pain response
transduction
transmission
perception
modulation
the portions involved in the interpretation of pain signals
limbic system
reticular formation
thalamus
hypothalalmus
cortex
what is transduction
response to tissue injury
release of chemical mediators
conversion of energy types
generation of an AP
List chemical mediators involved in pain
prostaglandins
substance P
histamine
bradykinins
serotonin
potassium
3 phases of transmission
injury to SC
SC to brainstem and thalamus
thalamus to cortex
how are AP’s generated
voltage gated ion channels embedded in a cell’s plasma membrane
what part of the pain cycles provides evidence for the variability in pain experience
modulation
A DELTA
_________ myelinated
_______diameter
________ speed conducting fibres
_______ type of pain
acute or chronic
thinly
large
fast
sharp pain
acute
C fibres
_________ myelinated
_______diameter
________ speed conducting fibres
_______ type of pain
acute or chronic
unmyelinated
small
slow
dull aching pain
persistant pain
A beta
_________ myelinated
_______diameter
________ speed conducting fibres
_______ type of pain
acute or chronic
highly
large
rapid conducting
light touch, non noxious stimuli
what is the gate control theory
The Gate Control Theory of Pain is a mechanism, in the spinal cord, in which pain signals can be sent up to the brain to be processed to accentuate the possible perceived pain, or attenuate it at the spinal cord itself. activites such as rubbing can close the gate
3 types of pain of which one has 2 subtypes
nocipceptive (somatic vs visceral) neuropathic, somatoform
list 4 other types of pain
referred, phantom, cancer, intractable, breakthrough
what is intractable pain
pain not relieved by ordinary medical, surgical interventions and pain persistants
ACUTE VS PERSISTANT PAIN COMPARE
severity:
NS response:
vitals:
reason:
pt appearance:
reporting:
behaviour:
ACUTE
- mild to severe
- sympathetic
- increased HR, rr, bp
- diaphoresis, dilated pupils
- restless and anxious
- reports pain
PERSISTENT
- mild to severe
- parasympathetic
- dry warm skin, pupils normal
- beyond healing phase
- distressed and withdrawn
what is the BPI
brief pain inventory
assesses severity of pain and degree of interference of function 0-10
why are adjuvant therapies applied
not typical pain meds but helpful for management and can reduce pain meds required (opiod sparing)
examples of adjuvant therapy
amitripyline
carbemazepine
pregab
diazepam