Overlay of a sponge soaked with ropivacaine and multisite infiltration analgesia result in faster recovery after laparoscopic hepatectomy

Figure 2 The levels of stress hormones, including epinephrine, norepinephrine, and cortisol, and cumulative sufentanil consumption during the first 48 h after the operation. A: Epinephrine; B: Norepinephrine; C: Cortisol; D: Cumulative sufentanil consumption. ^bP < 0.01, ^cP < 0.0001.