[Systematic collection and analysis of intraoperative anaesthetic-related problems].

Objective: The purpose of the study was to systematically collect and analyse the frequency, type and severity of all untoward intraoperative anaesthetic-related problems in a hospital over a 6-month period.

Methods: An observational, systematic, prospective, and cross sectional study was conducted on the events and their risk factors. The study is based on a system in which anaesthesia-related data are recorded from all anaesthetic cases on a routine basis, including sedation and obstetric analgesia.