Abstract Background and Objective : An observational study conducted earlier to determine predictors of postoperative outcome in non-cardiac surgical pediatric patients showed that factors which influenced postoperative evolution were multiple. These included American Society of Anesthesiologists (ASA) score, transfusion, age, emergency surgery, and surgery. The objective was to describe in details outcomes in non-preterm children under one year old included in the initial study. Methods : Secondary analysis of the initial retrospective observational study in 594 patients with a mean age of 90.86±71.80 months. The Ethics Committee approved the study under the registration number 2017-CK-5-R1. Results : There were 97 non-preterm children included with a mean age of 4.4±3.5 months. Mean weight was 5.1±2.7 kilograms. There were 48 abdominal surgical patients (49.5%), 48 neurosurgical patients (49.5%) and 1 orthopedic surgery patient (1%). 30 patients had intra-operative and or postoperative complications (organ failure or sepsis) (30.9%). The most common intra-operative complication was hemorrhagic shock (5.2%); the most affected system in the postoperative period was the respiratory system in terms of organ failure and pulmonary sepsis with an overall rate of 12.4%; the most common postoperative infection was septicemia (7.2%). The rate of postoperative renal failure was 1%. There were 5 in-hospital deaths (5.2%). Conclusion : In this cohort of 97 non-preterm infants under one year old, the rate of patients with intra-operative and or postoperative complications was 30.9%. It is time to reconsider integrating goal directed therapies in intra-operative patient management to improve postoperative outcome.