a decreasing trendP = 0.097
In our study, postoperative right atrial volume showed a decreasing trend (132.26 ± 56.3 mL vs. 120.41 ± 58.98 mL, P = 0.097), and IVC diameter was significantly reduced (23.02 ± 6.22 mm vs. 19.26 ± 4.38 mm, P < 0.001), particularly in the LD group.