Fig. 1.
Scatterplots indicating the relationship between pulmonary capillary wedge pressure (PCWP) and echocardiography variables across the times of study with individual lines of best fit. According to the linear mixed model results, the significant effects identified were (1) the effect of time of study on change in overall E wave between pre-An transthoracic echocardiography (TTE) and graft transesophageal echocardiography (TEE) (P = 0.03) and in E/A between pre-An and cardiopulmonary bypass (CPB) TEE (P = 0.001) and (2) the effect of interaction of time and PCWP on E wave between pre-An and post-An TTE (P = 0.005). A = late mitral inflow peak velocity; D = diastolic pulmonary vein velocity; DT = deceleration time; E = early mitral inflow peak velocity; e′ = early peak mitral annular tissue velocity; Graft TEE = the measurement performed during harvest of coronary grafts; post-An TEE = the first TEE measurement performed after induction of anesthesia; post-An TTE = the TTE study performed after induction of anesthesia; post-CPB TEE = performed after separation from cardiopulmonary bypass; pre-An TTE = the preanesthetic measurement; S = systolic pulmonary vein velocity.