Early gastric dilation after laparoscopic sleeve gastrectomy: Insights from a three-dimensional computed tomography reconstruction study

Figure 1 Schematic diagram of laparoscopic sleeve gastrectomy. A: Pneumoperitoneum establishment and abdominal exploration; B: Calibration tube placement and cutting boundary determination; C: Gastric resection; D: Reinforced suturing.

Figure 2 Flow chart describing the research design scheme. LSG: Laparoscopic sleeve gastrectomy; 3D: Three-dimensional; CT: Computed tomography; %TWL: Percent total weight loss.

Figure 3 Gastric volumes measured by three-dimensional computed tomography reconstruction. The morphological indicators of the residual stomach measured included the total sleeve volume, tube volume, antral volume, and tube-to-antral volume ratio, as well as the degree of residual gastric dilation. Total sleeve volume was defined as the total volume of the sleeve portion from the top of the staple line to the pylorus. Tube volume was defined as the volume of the sleeve portion from the top of the staple line to the incisura angularis. Antral volume was defined as the volume of the sleeve portion from the incisura angularis to the pylorus. The degree of residual gastric dilation was computed using the following formula: Degree of residual gastric dilation = [(total stomach volume at 3 months - total stomach volume at 1 month)/total stomach volume at 1 month] × 100. TSV: Total sleeve volume; TV: Tube volume; AV: Antral volume.

Figure 4 Trend line graph of body mass index and percent total weight loss changes within 12 months. A: Changes in body mass index of laparoscopic sleeve gastrectomy patients at 1 month, 3 months, 6 months, and 12 months postoperatively; B: Changes in percent total weight loss of laparoscopic sleeve gastrectomy patients at 1 month, 3 months, 6 months, and 12 months postoperatively. BMI: Body mass index; %TWL: Percent total weight loss.

Figure 5 Dispersion diagrams of percent total weight loss at 12 months after laparoscopic sleeve gastrectomy associated with the degree of residual gastric dilation. %TWL: Percent total weight loss.