Intraoperative Anuric Episodes in Patients Undergoing Laparotomy

Inclusion Criteria: * Offered patient information and written informed consent * Female patients aged greater than or equal to 18 years for cytoreductive surgery of a primary epithelial ovarian tumour Exclusion Criteria: * Patients with relapse Ovarian Cancer * Patients aged less than 18 years * Persons without the capacity to consent * Unability of German language use * Lacking willingness to save and hand out data within the study * Accommodation in an institution due to an official or judicial order * (Unclear) history of alcohol or substances disabuse * Coworker of the Charité * Advanced disease of the oesophagus or upper respiratory tract at the beginning of hospitalisation * Operation in the area of the oesophagus or nasopharynx within the last two months before participation in the study * Neurological or psychiatric disease at the beginning of hospitalisation * CHF (congestive heart failure) according to (New York Heart Association) classification - NYHA class IV at the beginning of hospitalisation * American Society of Anaesthesiologists (ASA) classification greater than IV * Renal insufficiency (dependency of haemodialysis) at the beginning of hospitalisation * Pulmonal oedema in thorax x-ray at the beginning of hospitalisation * History of intracranial hemorrhage within one year before participation in the study * Conditions following venous thrombosis within the last three years before study inclusion * Known allergies or hypersensitivity on colloidal, starch or gelatine infusion solutions * Diabetes mellitus with signs of severe neuropathy