RESUMO
OBJECTIVE: Reactive oxygen species (ROS) induced by several diseases can trigger oxidative stress. During laparoscopy, increased intraabdominal pressure caused by pneumoperitoneum may lead to splanchnic ischemia followed by reperfusion because of deflation. Because ischemia reperfusion creates oxidative stress, in this study, we aimed to investigate the oxidative-antioxidative status of the pediatric patients with laparoscopic surgery. METHODS: The children underwent laparoscopic procedures under general anesthesia, and they were mechanically ventilated. Blood samples were obtained after induction of anesthesia, at the end of the surgery, and were centrifuged at 3000 revolutions per minute for 10 minutes to separate plasma. The plasma total antioxidant status (TAS), total oxidant status (TOS), and oxidative stress index (OSI) were determined. RESULTS: Plasma TOS and OSI levels were significantly higher at the end of the surgery than after induction of anesthesia (P < .05 and P < .01, respectively). On the other hand, plasma TAS levels were lower in the end of the surgery than after induction of anesthesia (P < .05). CONCLUSIONS: These results suggest that ROS are generated during the laparoscopic procedure, possibly as a result of an ischemia-reperfusion phenomenon induced by the inflation and deflation of the pneumoperitoneum, which causes oxidative stress and consume plasma antioxidants.
