Background: We previously reported independent predictors of intraoperative and postoperative morbidity. These were age, American Society of Anesthesiologists Score (ASA), emergency situations, surgery and transfusion. ASA was the independent predictor of mortality. We conducted a secondary analysis of this previous retrospective study in patients who underwent exploratory laparotomy and intestinal resection.Objectives: To describe intraoperative and postoperative outcomes in patients who underwent exploratory laparotomy and intestinal resection in the initial study and to present a research protocol for intraoperative and postoperative optimization.Methods: Secondary analysis of the initial study. The Ethics Committee approved the study.Results: There were 54 patients with a median age of 15.5[0-172] months. Thirty-seven (68.5%) patients underwent intestinal resection, nine (16.7%) underwent exploratory laparotomy, and eight (16.8%) underwent laparotomy for volvulus.Fourteen (25.9%) patients had intraoperative and/or postoperative complications. Two (3.7%) patients had intraoperative hemorrhagic shock. Two (3.7%) patients had postoperative cardio-circulatory failure. Three (5.6%) had postoperative respiratory failure. One (1.8%) patient had postoperative multiple organ failure and neurologic failure. Three (5.6%) patients had postoperative abdominal sepsis. One (1.8%) patient had postoperative multiple organ sepsis and neuromeningeal sepsis. Four (7.4%) patients had postoperative pulmonary sepsis. Two (3.7%) had postoperative septicemia. Six (11.1%) patients had reoperations. Seventeen (31.5%) patients had intraoperative transfusion.The in-hospital mortality rate was 3.7% in two patients.Conclusion: The number of patients with postoperative complications in this cohort was not negligible. We therefore elaborated a research protocol where intraoperative patient management will be guided with transthoracic echocardiography for fluid and hemodynamic therapy optimization. The objectives of this study protocol are to clarify the impact of intraoperative goal-directed fluid and hemodynamic therapy with transthoracic echocardiography on postoperative outcomes in terms of complications in pediatric surgical patients.