Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: Aortic Valve Replacement Using Closed Extracorporeal Circuit. Minimized Versus Conventional Extracorporeal Circulation Technique: Qualitative Differences
Brief Summary: In this study, the investigators aim to compare cerebral embolic load in patients undergoing surgical aortic valve replacement using either the minimized extracorporeal circulation or the conventional extracorporeal circulation technique. The detection of cerebral emboli is performed not-invasively by transcranial Doppler detection of high-intensity transient signals representing solid or gaseous microembolism in the middle cerebral arteries. The investigators hope to get more insight in the mechanism (incl. quantity) of cerebral embolism during aortic valve surgery using extracorporeal circulation.