Analgesics Flashcards
Morphine
opioid analgesic with a high affinity for mu receptors. also alters brain’s perception of pain
highly addictive
tolerance develops
side: resp depression, itching
5 families of opioid receptors
mu kappa sigma delta epsilon
Fentanyl/ Duragesic
opioid analgesic that’s like morphine x80
used for anesthesia and intractable pain
comes in a lollypop form
side: respiratory depression -> hypoventilation
constipation, addiction
codeine
weaker opioid analgesic that can cause sedation or constipation
Tramadol/Ultram
Centrally acting analgesic
more reuptake of nore and serotonin
less respiratory depression than others
Naloxone/ Narcan
opioid antagonist that antidotes opioid overdose
it binds to the opioid receptors without eliciting the response
Aspirin/ Acetylsalicylic acid
NSAID
irreversible cox1 and 2 inhibition.
blocks prostaglandins @ thermoregulatory centers-> anti-pyretic
decreases tissue sensitivity to the sensation of pain
sides: GI, REYES!!!, SALICYLISM,
All cox inhibitors can cause these side effects:
renal dz
elevated bp
Salicylism sxs
dizziness, tinnitus, hyperventilation, coma, death
Celecoxib/ Celebrex
NSAID that does reversible, selective COX2 inhibition
Acetaminophen/ Tylenol
NSAID-
Sides:
overdose with alcohol-> hepatic necrosis -> metabolized to NAPQI usually just excreted but excess leads to hepatocellular death
Category B
Acetominophen poisoning
stage 1 (12-24 hrs)- n/v Stage 2 (24-48 hrs)- increasing liver enzymes stage 3 (72-96 hrs)- peak hepatotoxicity stage 4 - recover, or have liver transplant or death
NAC for antidote to augment glutathione reserves