Lecture 4.2 - Pain Management Flashcards
Nociceptive pain is….
pain that results from injury to or inflammation of somatic or visceral tissues
its a mechanisms humans have adapted to protect us from actual & potential danger
Nociceptive pain is responsive to….
typical analgesics
Examples of Nociceptive pain
Paper cut Burn Arthritis Trauma Muscle strains or sprains Tendonitis
Agents used in nociceptive pain
OTC Antidepressants (duloxetine ) Muscle relaxant's Steroid injections Hyaluronic acid injections Cannabinoids
Nociceptive Pain Pathway Steps
- Stimulation
- Transmission
- Perception
- Modulation
Stimulation
Stimulation of free nerve endings = nociceptors
Responsible for starting pain signal
Determine what is harmful and
Transmission
A & C fibers
A = large, myelinated, fast = sharp well localized pain
C - small, unmyelinated, slower = dull, aching, poorly localized pain
2 processes for Transmission to be complete (pain felt)
Transmission from periphery to the spinal cord
Transmission from the spinal cord to the brain
Stops of Transmission
1st = Spinal cord 2nd = Brain
Adaptive inflammation
in response to trauma, body will purposefully cause inflammation/swelling
purpose is to decrease contact with and minimal movement to the injured area
Central Sensitization
In response to tissue damage & inflammation, in CNS neurotransmitters change composition, transduction and transmission properties resulting in enhanced pain
Can lead to Hyperalgesia and Allodynia
Hyperalgesia
Exaggerated pain response
Allodynia
Painful response to normally non-noxious stimuli
Neuropathic pain is due to…
damage or dysfunctional nerves
Subjective view Nociceptive pain
dull, pain, cramping, aching
Response to typical analgesics