Figure 3

Correlation between antithrombin III (AT III) values and prothrombin fragment 1+2 (F1+2). Patients with normal AT III levels show almost no F1+2 production in the peri- and postoperative courses. During cardiopulmonary bypass (CPB), low AT III correlates with high F1+2: **p < 0.01. post OP, postoperatively; pre OP, preoperatively.