Effectiveness and safety of continuous wound infiltration for postoperative pain management after open gastrectomy

Figure 2 Characteristic after surgery. A: Cumulative morphine consumption within the first 48 h after surgery. ^bP < 0.01 vs group patient-controlled intravenous analgesia (PCIA); B: Ramsay sedation score within the first 48 h after surgery. ^aP < 0.05, ^bP < 0.01 vs group PCIA; C: Wound healing score within 72 h after surgery; D: Mean arterial pressure within the first 48 h after surgery. ^bP < 0.01 vs group PCIA; E: Heart rate within the first 48 h after surgery. ^aP < 0.05 vs group PCIA.