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