Exam 1- Pain Management Flashcards
what is an acute type of pain
less than 30 days
localized/defined
what is chronic type pain
3-6 months
nociceptive (PNS, CNS, SNS)
what is most reliable indicator for pain
subjective
what do we need to consider when choosing a measurement for pain
pt cognitive ability
symptom duration
time
what can we ask a patient to figure out their pain
location
duration
intensity
type
worse or better factors
radiates
sleep patterns
effects on ADLs
what are non verbal factors of pain
sighs
gasp
facial
restlessness
rubbing the area
vital sign
what is the primary sensation interpreted by the anterolateral spinothalamic pathway
crude touch
pain
temperature
what receives the signals in the anterolateral spinothalamic pathway
mechanoreceptors
nociceptors
thermoreceptors
what n/fibers are in the anterolateral spinothalamic pathway
c fibers
what is nociception
neural process of encoding noxious stimuli
what is pain
output of the brain triggered by action potential of nociceptor
what can inhibit nociception
modalities
what are the 3 dimensions of pain experience in the brain
sensory discriminative- where pain, how it feels
motivational affective- how the pt feels about the pain
cognitive evaluative- what the pt thinks about the pain and what they expect
what is located at the end of the afferent n
sensory receptors
what are free n endings
type of nociceptor/mechanoreceptor that sense pain
what are nociceptors triggered by
intense thermal, chemical, or mechanical
extrogenous
endogenous
what are afferent neurons of PNS
c fibers
a delta fibers
what are c fibers
small unmyelinated
dull, throbbing, aching
slow onset, long lasting symptoms
emotionally difficult
blocked by opiod
what are A delta fibers
longer, myelinated
sensitive to high intensity
sharp, stabbing
quick onset, short
localized
not blocked by opiods
what structural difference makes fibers faster than c fibers
myelin
where are the 1st order neurons housed
dorsal root ganglion
where do the 1st order neurons go after DRG
continue to spinal cord to Dorsal Horn turns to 2nd order
what neuro pathway does pain sensory travel in the CNS
spinothalamic tract
where do 2nd order neurons go after dorsal horn
anterolateral spinothalamic tract to thalamus where 3rd order is
where does the 3rd order neuron on the spinothalamic tract to terminate in the brain to be perceived as pain
primary somatosensory cortex
what can decrease the perception of pain
rubbing
moist heat
massage
increase stimulation of A beta fibers
how do endorphins work in the peripheral system
inhibitory actions causing presynaptic inhibition
act on C fibers
how do endorphins work in the central system
relieve pain naturally as they attach to reward centers in the brain
what is the role of the release of opiopetins
controlling pain during emotional distress
what are pain management goals
control inflammation
alter nociceptive sensitivity
increase opiod receptors
modify n conduction
management
what are the drawbacks of pharmacological agents
adverse side effects
may not be sufficient
risk of dependence
patient adherence
how does drugs control pain
modify inflammation mediators at periphery
alter pain transmission
alter central perception of pain
what are systemic agents
primary method of pain management
NSAIDS, etc