Matrix Metalloproteinase-9 Production following Cardiopulmonary Bypass Was Not Associated with Pulmonary Dysfunction after Cardiac Surgery

Figure 1

Plasma matrix metalloproteinase-9 concentrations increased significantly at 2–6 hours after beginning cardiopulmonary bypass (), as compared with the preanesthesia level (all ). The level returned closely to the preanesthesia level at 24 hours ().