Pharmacology 2 Flashcards
function of digoxin
regulates calcium influx into heart increasing force of contractions but slowing down contractions
ADR’s of digoxin
dysrhythmias, headaches, fatigue, malaise, confusion, low K+ levels
function of antidysrhythmias/antiarrhythmics
drugs used to prevent or correct a cardiac arrhythmia
function of adenosine (unclassified)
slows conduction through AV node
what are the classes of vaughan williams classification
class l- Na+ channel blockers class ll- B-blockers class lll- K+ channel blockers class lV- Ca+ channel blockers
examples of class l Na+ blockers
procainamide, quinidine, lidocaine, flecainide, propafenone
examples of class ll B-blockers
anything ending in olol or lol
examples of class lll K+ blockers
amiodarone, dronedarone (darone)
ADR’s of class lll K+ blockers
skin can turn blue/purple, pulmonary toxicity, can affect nearly every organ
examples of non-dihydropyridine CCB’s class lV
verapamil, diltiazem
hemostasis vs bleeding
hemostasis
term for process that stops bleeding
what is a thrombus
a blood clot
what is an embolus
a blood clot that moves through the blood vessels
what is the result of coagulation
fibrin, a clot forming substance that holds platelets together and stops blood flow
what is the intrinsic pathway
- activated by internal trauma
- factors Vlll, lX, Xl, and Xll
- slow
what is the extrinsic pathway
- activated by external trauma
- factor Vll
- fast
what is the function of heparins (anticoagulants)
inhibits clotting factors lla, Xa, and lX
what is the function of anticoagulants
decreases blood coagulation (also known as blood thinners)
examples of heparins
anything ending with parin’s
what is the function of warfarin (anticoagulants)
inhibits vitamin K-dependent clotting factors synthesis ll, Vll, lX, and X made by the liver
what is the function of antithrombin medications
inhibits thrombin (factor lla)
what are the contraindications of anticoagulants
drug allergy, acute bleeding, warfarin not allowed in pregnancy
ADR’s of anticoagulants
bleeding, heparin induced thrombocytopenia