Study Status: Completed
Recruit Status: Completed
Study Type: Observational
Official Title: Does an Acquired Von Willebrand Syndrome Influence Perioperative Blood Loss in Patients With Severe Aortic Stenosis Undergoing Aortic Valve Replacement?
Brief Summary: Patients with severe aortic stenosis often suffer from an acquired Von Willebrand syndrome by degeneration of the polymers during passage through the narrow valve leading to turbulences. We hypothesized that the diagnosis of acquired von Willebrand syndrome influence perioperative blood loss in patients undergoing open cardiac valve replacement.