[Coronary stents and non-cardiac surgery: current management strategies].

The care of patients with coronary stents in the perioperative period of non-cardiac surgery requires anesthesiologists, surgeons and cardiologists. The management of dual antiplatelet therapy should be handled depending on type and urgency of the surgery, the risk of bleeding, type of coronary stent implanted, time from placement and the risk of stent thrombosis. For patients identified as high risk of stent thrombosis, surgery should be planned at hospitals with cardiac catheterization facilities.

Aortic stenosis and acquired von Willebrand disease: lack of association.

Objectives: The association between aortic stenosis (AS) and acquired von Willebrand disease type 2A has been described. It may be present in up to 90% of patients with AS. Shear stress has been proposed as the underlying mechanism; however, the physiopathology of this condition is not completely understood.