Comparative efficacy analysis of laparoscopic-assisted transanal total mesorectal excision vs laparoscopic transanal mesorectal excision for low-lying rectal cancer

Figure 2 Comparison of surgical stress response factors. A: Comparison of cortisol levels; B: Comparison of adrenaline levels; C: Comparison of norepinephrine levels. ^aP < 0.05 compared within the group preoperatively and postoperatively. ^bP < 0.05 compared with the laparoscopic total mesorectal excision group during the same period. Cor: Cortisol; AD: Adrenaline; NE: Norepinephrine; LapTEM: Laparoscopic total mesorectal excision; TaTME: Transanal total mesorectal excision.