Pharmacology of pain management Flashcards
Types of pain?
visceral nociceptive
somatic nociceptive
neuropathic
somatic
central sensitisation
Central sensitisation
Type of nociceptors?
Heat- TRPV-1 (peripheral and central) - brain and dorsal horn.
TREK1
mechanical pressure- MDEL7
Prostaglandin receptors
prostanoic receptors - G coupled receptors (Gs)
1st order neuorons
dorsal root ganglia
then goes to the dorsal horn
Nitric oxide
inhibits the abilty of opioids to hyperpolarize the presynaptic terminal
What is substance P?
NK1 receptor.
neurokinenin
increases neuronal excitability.
Management ladder
Mild pain (1-3/ 10) acetaminophen +- NSAID
Moderate pain (4-6/ 10): Acetaminophen + NSAID +- Weak Opioid (e.g., Tramadol)
Severe pain (7-10/ 10) : Acetaminophen
Multimodal therapy
OPieo