Acute High-risk Abdominal Surgery Study - an Optimized Perioperative Course

"optimized course: Intervention before, during and after abdominal surgery.~Focus on fast track with multimodal standardized intervention:~1. standardized preparing for surgery including high dose antibiotics and epidural analgesia etc. and transfer to intermediate care before surgery (the post-anaesthesia care unit)~2. GDT-LiDCO fluid management pre-, per- and postoperative~3. Postoperative triage to 24 hour intermediate care based on ASA score and Surgical Apgar Score~4. Focus on early mobilization, fysiotherapy and optimal nutrition postoperatively"