Evaluation of the clinical effects of atropine in combination with remifentanil in children undergoing surgery for acute appendicitis

Figure 2 Comparison of hemodynamic parameters between the research and control groups. A: Changes in oxygen saturation before, during, and after surgery in the research group (RG); B: Changes in mean arterial pressure before, during, and after surgery in the RG; C: Changes in heart rate before, during, and after surgery in the RG; D: Changes in respiratory rate before, during, and after surgery in the RG. ^aP < 0.05 vs control group; ^bP < 0.05 vs before surgery; ^cP < 0.01 vs before surgery. SPO₂: Oxygen saturation; MAP: Mean arterial pressure; HR: Heart rate; RR: Respiratory rate.