Emergency surgery is associated with high mortality rates, post-operative complications and prolonged duration of hospital admission. The investigators will implement a multidisciplinary optimized perioperative course consisting of a number of interventions carried out before, during and after surgery.~Hypothesis: An optimized perioperative course will reduce the 30-day mortality in emergency abdominal surgery patients.~The investigators will do a post-hoc analysis of the data registered.
The objective of this study is to implement an optimized perioperative course for patients undergoing acute high-risk abdominal surgery in order to improve the outcome.~The optimized perioperative course consists of a number of interventions carried out before, during and after surgery.