N365 Anti-Inflammatory Flashcards
What classification is Aspirin?
Salicylates
What is the action of a Salicyclate?
Probably inhibits cyclooxygenase (enzyme required to make prostaglandins).
What classification is ASA?
Saliccyclate
What is the Action of ASA on analgesia?
Main is perpheral affect by preventing sensitization of pain receptors by inhibiting prostaglandin synthesis.
Also centrally in small amounts on the hypothalmus by modifying perception of pain.
What is the affect of ASA as an antipyretic?
acts on hypithalmus
How is ASA an anticoagulant?
it irreversibly inhibts platelet aggregation, weakly inhibits prothrombin synthesis, and prolongs bleeding time.
What are the uses of ASA?
to relieve pain associated with inflamation, not effective with sharp pain associated with direct stimulation of sensory nerves. Also as an antipyretic as prostaglandins are pyrogenic by themselves. anti-inflammatory, and antiplatelet!
What are the effects of ASA on the GI system?
epigastric distress, N/V, ulceration
What are the effects of ASA on the respiratory system?
respiratory stimulation due to increased O2 consumption.
What are the effects of ASA on the cardiovascular system?
in large doses it causes peripheral dilation.
What are the effects of ASA on the blood?
Anemia and iron defficiency from bleeding, thrombocytopenia due to bone marrow depression or low platelets. Coagulation effect, increased capillary permeabiility and prolonged bleeding time, interferes with some clotting factors.
What are the effects of ASA on the CNS system?
Tremmors, headaches, vertigo, tinnitus, diplopia, agitation, can be ototoxic to the 8th cranial nerve.
What are the effects of ASA on the metabolism?
toxic doses increase metabolic rate protein bound iodine is displaces affects plasma corticosteroid leves increased plasma insulin levels uricosuric - acidic urine high doses interfere with ascorbic acid availability.
What classification is acetaminophen?
non-antiinflammatory anagesic - non opiod
What is the action of non-inflammatory analgesic non opiods like tylenol?
uncertain but has both central and peripheral action.
What are the ADR’s of acetaminophen?
remarkably free of them, but is extremely toxic to liver in large doses, chronic use can lead to kidney damage.
What is the antidote to tylennol?
acetylcystine (Mucomyst)
Tylenol No 2
acetaminophen 325mg + 15mg codine.
Tylenol No 3
acetominophen 325mg + 30mg codeine
Tylenol No 4
acetominophen 325mg + 60mg codeine
What class is Indomethacin (Indocin)?
non steroidal anti-inflammatory
What is the action of an Indocin?
potent inhibitor of prostaglandin synthesis.
What are the ADR’s of Indocin?
GI, NV, peptic ulcer and hemmorage, headache, dizzyness, tinnitus, skin rash, aggrivate psychiatric disturbances, parkinonism, epilesy, and occular changes 1/2 to 1/3 have side effects.
Special Information for Indocin
side effects can mask symptoms of infection.
What are some drung interactions with indocin?
probenecid increases plasma levels of indocin, reduces the naturiuretic and antihypertensive effects of lasix. can cause an increase in levels of lithium and reduce excretion of lithium, ASA may inhibit the absorption of indocin.
How should Indocin be given
give with food, milk, or antacid to slow absorption and decrease side effects.