PRE-FINAL 1 Flashcards
Anticoagulants and Coagulants
Is animportantprocess that prevents excessive bleeding when a blood vessel is injured.
Bloodclotting orCoagulation
(a type of blood cell) and proteinsinyour plasma (the liquid part of blood) work together to stopthebleeding by forming a clot overtheinjury.
Platelets
What is the chemistry of Heparin?
Sulfated glycosaminoglycan
a. unfractionated
b. low –MW
What is the chemistry of Warfarin?
Coumarin
Route of administration: Parenteral (IV or SC) Not IM-produce hematoma
Heparin
Route of administration: Oral, IV
Warfarin
What is the route of administration of Heparin?
Parenteral (IV or SC)
Not IM-produce hematoma
What is the route of administration of Warfarin?
Oral, IV
What are the uses of Heparin?
Post MI, Prevention of DVT and PE
What are the uses of Warfarin?
Prevention of DVT and PE
Atrial fibrillation
Artificial heart valves
What is the mechanism of Heparin?
Activates antithrombin
What is the mechanism of Warfarin?
Inhibits Vit. K synthesis
What are the side effects of Heparin?
Bleeding, Allergy, Thrombocytopenia
What are the side effects of Warfarin?
Bleeding and Teratogenic
What is the monitoring in Heparin?
Activated partial thromboplastin time
What is the monitoring in Warfarin?
Prothrombin time (expressed as INR)
What is the antidote of Heparin?
Protamine sulfate (1mg/100 units)
What is the antidote of Warfarin?
Vitamin K
What is the MW of Unfractionated Heparin?
MW = 5,000-30,000 Daltons
What are the drugs under Low molecular weight heparins (LMWH)?
Enoxaparin, dalteparin, tinzaparin
It has longer half life and less bleeding, routine aPTT unnecessary
Low molecular weight heparins (LMWH)