The analysis of adverse events, including morbidity and mortality (M&M), helps to identify subgroups of children at risk and to modify clinical practice.

There are scant data available from low- and middle-income countries. Our aim was to estimate the proportion of pediatric patients with various severe adverse events in the perioperative period extending to 48 hours and to describe the clinical situations and causes of those events.

We reviewed the M&M database of the Department of Anesthesiology between 1992 and 2016. A data collection tool was developed, and the outcomes were standardized.

Each case was reviewed independently and subsequently discussed between 2 reviewers to identify a major primary causative factor.