A 20-year-old woman with a family history of von Willebrand disease is found to have an activated partial thromboplastin time (aPTT) of 78 (normal = 32) on routine testing prior to cholecystectomy. Further investigation reveals a prothrombin time (PT) of 13 (normal = 12), a platelet count of 350,000/mm³, and an abnormal bleeding time. Which of the following should be administered in the perioperative period?
AFactor VIII
BDesmopressin (DDAVP)
CPlatelets
DVitamin K
Which of the following drugs need not be stopped before surgery?
AHigh Dose Aspirin
BMetformin
CDigitalis
DWarfarin
Which of the following drugs is a direct inhibitor of clotting factor Xa?
AArgatroban
BFondaparinux
CApixaban
DAspirin
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