MSK I Flashcards
acetaminophen
reversible inhibition COX
no anti-inflammatory
antipyretic, analgesic
avoid reye syndrome
tx child with viral infection
-with acetaminophen
not ASA
adverse acetaminophen
OD - hepatic necrosis
metabolite - NAPQI - deplete glutathione
toxic byproducts form
tx acetaminophen toxicity
N-acetylcysteine - regenerate glutathione
LTB4
chemotactic
PGI2
prostacyclin
platelet aggregation inhibitor
decreased vascular tone
TXA2
thromboxane
increased platelet aggregation and vascular tone
PGE1
decreased vascular tone
PGE2
increased uterine tone
with PGF2
corticosteroids
inhibit PLA2
decreased arachidonic acid synthesis
two pathways of arachidonic acid
lipoxygenase - form leukotrienes
COX - form prostacyclin, PGs, thromboxane
phospholipase A2
synthesis of AA
inhibited corticoisteroids
triamcinolone/methylprednisone
corticosteroid
dexamethasone/betamethasone
corticoisteroids
zileuton
inhibit lipoxygenase - leukotriene synthesis inhibitor
montelukast
inhibit leukotriene receptors
LTC4, D4, E4
zafirlukast
inhibit leukotriene receptors
LTC4, D4, E4
alprostadil
PGE1 analog
dinoprostone
PGE2 analog
carboprost
PGF2 analog
aspirin
irreversible inhibit COX1 and 2
via acetylation
type of NSAID
clinical use aspirin
low dose (300mg) - decreased platelet aggregation
intermediate dose (300-2400mg) - antipyretic and analgesic
high dose (2400-4000mg) - anti-inflammatory
adverse aspirin
gastric ulceration
tinnitus - CN VIII
chronic use - acute renal failure - interstitial nephritis
reye syndrome
aspirin use in child with viral infection