To compare patient outcome data ( death, re-surgery, change in transvalvular gradient) after cardiac double valve replacement (aortic and mitral valve) with patient outcome data after aortic valve replacement and mitral valve reconstruction in patients with cardiac surgery at University Hospital Basel/ Switzerland since 2009.
To compare patient outcome data after cardiac double valve replacement (aortic and mitral valve) with patient outcome data after aortic valve replacement and mitral valve reconstruction