Post-operative stroke rates according to increasing amount of red blood cell (RBC) units (0=none, 1=1–2 units, 2=>2 units; p=0.002), platelets units (0=none, 1=1–8 units, 2=>8 units; p<0.0001) and Octaplas® units (0=none, 1=1–4 units, 2=>4 units; p<0.0001) transfused.