A patient has a history of clot formation. She is scheduled for bowel resection due to colorectal cancer. What anticoagulant agent will be administered prophylactically?
A) Acetylsalicylic acid (Aspirin)
B) Heparin
C) Warfarin (Coumadin)
D) Streptokinase (Streptase)
B
Feedback:
Prophylactically, low doses of heparin are given to prevent thrombus formation in patients having major abdominal surgery. Acetylsalicylic acid is not used to prevent thrombus in patients having major abdominal surgery. Warfarin takes several days for therapeutic effects to occur; thus it is not used prophylactically to prevent thrombus in a patient with abdominal surgery. Streptokinase promotes thrombolysis and is not used to prevent thrombus.
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