Week 12 Flashcards
Warfarin an oral anticoagulant, acts:
a) To directly prevent the conversion of prothrombin to thrombin
b) To decrease the production of vitamin K clotting factors in the liver
c) As a catalyst in the conversion of plasminogen to plasmin
d) Immediately, so it is the drug of choice in emergency situations
b) To decrease the production of vitamin K clotting factors in the liver
The low-molecular-weight heparin of choice for preventing deep venous thrombosis after hip replacement therapy is:
a) Tinzaparin
b) Dalteparin
c) Heparin
d) Enoxaparin
d) Enoxaprin
A thrombolytic agent could be safely used in:
a) CVA within the last 2 months
b) Acute MI within the last 3 hours
c) Recent, serious GI bleeding
d) Caesarean birth.
b) Acute MI within the last 3 hours
Evaluating a person who is taking an anticoagulant for blood loss would usually include assessing for which of the following?
a) The presence of petechiae
b) Bleeding gums while brushing the teeth
c) Dark-coloured urine
d) Yellow colour sclera or skin
e) The presence of ecchymotic areas
f) Loss of hair
a) The presence of petechiae
b) Bleeding gums while brushing the teeth
c) Dark-coloured urine
e) The presence of ecchymotic areas
The client with deep vein thrombosis is being treated with a heparin infusion. The nurse would monitor for therapeutic effectiveness by noting which of the following?
a) Activated partial thromboplastin time (aPTT)
b) Prothrombin time (PT)
c) Platelet counts
d) International normalised ratio (INR)
a) Activated partial thromboplastin time (aPTT)
A patient who is taking clopidogrel to prevent another stroke asks the nurse how the medication works. The nurse’s response should be based on an understanding that clopidogrel:
a) Inhibits platelet aggregation to prevent clot formation
b) Activates antithrombin III and subsequently inhibits thrombin
c) Inhibits enzymes involved in the formation of vitamin K
d) Converts plasminogen to plasmin to dissolve fibrin clots
a) Inhibits platelet aggregation to prevent clot formation
