Week 3 - Pain Flashcards
Acute pain is:
- cause is usually clear; obvious signs of injury or damage ie trauma or infection;
- may last a few days or weeks until healing completed;
- examples: dental abscess; bony fracture.
Chronic pain is:
- prolonged
* disruptive
Somatic pain:
originates near the skin, muscles, bones or connective tissue;
• Sharp sensation: e.g paper cut; sprained ankle;
Visceral pain:
deep internal – difficult to establish exact location;
• Sensations include: throbbing; cramping; aching; often associated with feeling sick.
Neuropathic pain:
damaged or malfunctioning nerves
Pain threshold is:
The maximum intensity of a stimulus that is painful
Pain tolerance is:
Maximum intensity of pain producing stimulus that a subject is willing to accept in any given situation
Allodynia is:
Pain due to a stimulus that would not normally illicit a painful response
Hyperalgesia is:
Increased pain from a stimulus that normally provokes pain
PQRST
P - Provoking factors of pain
Q - Quality of the pain - stabbing vs ache
R - Radiating - where is the pain? Location
S - Severity of the pain?
T - Timing - duration of the pain
EAEM
Extended action epidural morphine - new drug single shot - 48 hours long last analgesia adverse effects - similiar to morphine resp depression, nausea, constipation, pruritis
FITS
Fentanyl Iontophoretic Transdermal System
novel controlled patient analgesia
avoids systemic risks
not TGA approved
Multi modal approach
NSAIDS and opioids
Less opioids needed
reduction in side effects
Adjuvants (are different compounds that have undesired effects alone or low potency, but with opioids it can reduce narcotic intake)
Capsaicin
Can be a cream or injectable analgesic
Component of chilli peppers
Stimulates and decrease the sensitivity
Ketamine
Various routes
Blocks the release of excitorary neurotransmitters
analgesia and amnesia - pt forgets they were in pain in the first place
Side effects: dizziness and blurred vision
S4D - locked metal cabinet (different risks)
Liable to misuse and abuse
E.g Midazolam