GSTM1 and acute coronary syndrome: The same year, the Australian Patient Blood Management (PBM) guidelines14 advised to initiate transfusion at Hb < 70 g/L even in patients with heart failure and at < 80 g/L in those with an acute coronary syndrome, while in 2013 the American Society of Hematology (ASH) released a recommendation similar to that of AABB15.