Dynamic ultrasound monitoring of intraperitoneal effusion for predicting complications after laparoscopic gastrectomy

Figure 2 Characteristics of effusion and inflammation indicators. A: Simple fluid group; B: Complex fluid group. Line graphs show the mean effusion volume (left Y-axis) and inflammatory markers C-reactive protein (mg/L) and procalcitonin (ng/mL) (right Y-axis). The bar chart illustrates the proportion of simple vs mixed effusions at each time point. Data are presented as mean ± SD. Postoperative day 3 represents the peak for both the effusion volume and inflammatory response. CRP: C-reactive protein; PCT: Procalcitonin.