Fig. 2.
Comparison of intraoperative surgical bleeding. All data were included in the analysis. Box plot indicates median, 253.0 (interquartile range, 179.0 to 316.5) ml in the pressure-controlled ventilation (PCV) group versus 382.5 (328.0–489.5) ml in the volume-controlled ventilation (VCV) group. Error bar indicates maximum and minimum values excluding outlier (maximum 424 ml and minimum 212 ml in the PCV group, maximum 704 ml and minimum 168 ml in the VCV group). The amount of intraoperative surgical bleeding in the PCV group is less than that in the VCV group (P < 0.001). Empty dote is outlier.