Pharmacology Flashcards
ASA Class
Platelet Aggregation Inhibitor
Acetylsalicylic Acid Trade Name
Aspirin
ASA Mechanism of Action 1
Impedes clotting action and platelet aggregation by inhibiting platelet activation. Blocks formation of thromboxane A2. Effects last the life of each platelet.
ASA Mechanism of Action 2
Has anti-pyretic, analgesic, and anti-inflammatory properties.
ASA Indications
Recent onset of ischemic chest pain suggestive of AMI.
ASA Contraindications 1
Hypersensitivity: Severe allergy
Bleeding disorders (hemophilia, Von willebrand’s)
Unconsciousness
ASA Contraindications 2
Active Gastrointestinal (GI) Bleed
Children under the age of 14 increases the risk of Reye’s Syndrome
Asthmatic with previous sensitivity to ASA or NSAIDS
ASA Precautions/Interactions 1
Impaired renal and hepatic function
May produce bronchoconstrictions in asthmatics
ASA Precautions/Interactions 2
Pregnancy
Children and adolescents with influenza or chickenpox infection (increase risk Reye’s Syndrome)
ASA Precautions/Interactions 3
Symptoms are encephalopathy
May interact with warfarin (Coumadin) and other anti-coagulants and cause bleeding.
ASA Adverse Effects
Nausea and Vomiting, Heartburn, Bronchospasms, Bleeding, Urticaria
ASA Dosage
160 mg po; chew tablet before swallowing.
Given even if patient has taken own.
ASA Supplied
80 mg and 325 mg tablets are common
Epinephrine Trade Name
Adrenalin
Epi Class
Sympathomimetic, Adreneric
Epi Mechanism of Action 1
Directly stimulates alpha and beta-adrenergic receptors in the sympathetic nervous system
Epi Mechanism of Action 2
Bronchodilator and inhibits histamine release
Epi Mechanism of Action 3
CV and vasopressor: produces positive chronotropic and inotropic effects; increasing cardiac output, myocardial oxygen consumption and force of contraction
Epi Mechanism of Action 4
Vasodilation and vasoconstriction in anaphylaxis it restabilizes the mast cells
Epi Indications
Anaphylaxis
Epi Contraindications
None in anaphylactic shock
Epi precautions
Use with caution with pre-existing cardiac problems. Pt must be monitored.
Epi Adverse Effects
Palpations, angina, dysrythmias, N&V, headache, nervousness
Epi Pen Dosage
Epipen - 0.3 mg (pt over 66 lbs/30 kg)
Epipen Jr. - 0.15 mg (pt between 33lbs/15 kg and 66 lbs/30kg)