Figure legends
Figure 1. Pre- (A) and post-operative (B) computed tomography images in end-diastolic phase of patient 3. The vertebral-apex angle (preoperative: α; postoperative: β) is defined as the angle between the line perpendicular to the vertebral body and that from the vertebral body to the apex. The arrows indicate the left lower pulmonary veins; it is normal in (A) and diffusely stenotic in (B).
Figure 2. Cumulative survival rate after TAPVC repair. TAPVC, total anomalous pulmonary venous connection.
Figure 3. V-A angles before and after the operation. (A) The change in V-A angle after the operation. (B) Differences in the preoperative V-A angles (α) between the non-PVO and PVO groups. (C) Differences in the postoperative V-A angles (β) between the non-PVO and PVO groups. The V-A angles of the patients in the PVO group were 42° or more, while those in the non-PVO group were 40° or less. The dotted line presented the cut off value of 41°. (D) The ratio of post- and preoperative V-A angles (β/α). The ratios of the patients in the PVO group were 1.18 or more, while those in the non-PVO group were 1.15 or less. The dotted line presented the cut off value of 1.17. Values are median and interquartile range. PVO, pulmonary venous obstruction; V-A, vertebral-apex.