Effect of Pneumatic Intermittent Venous Compression on Fluid Volumes Infused During Major Abdominal Surgery

Inclusion Criteria: * The patient must have given his/her informed and signed consent * The patient must be insured or beneficiary of a health insurance plan * Patient with ASA score 1-3 * Body mass index \< 30 kg/m\^2 * Patient is schelduled for major abdominal surgery (laparotomy without risk of haemorrhage whose duration is assumed to be greater than 120 min) * The patient passes from home, directly to the hospital, without schelduled hospitalization in another department Exclusion Criteria: * The patient is participating in another study * The patient is in an exclusion period determined by a previous study * The patient is under judicial protection, under tutorship or curatorship * The patient refuses to sign the consent * It is impossible to correctly inform the patient * The patient is pregnant * The patient is breastfeeding * The patient has a contra-indication for treatment necessary for the study * ASA score \> 3 * body mass index \> 30 kg/m\^2 * Expected surgical time of \< 120 minutes * Surgery with risk of hemorrhage * Surgery via celioscopy * The surgery require perineal access, thus rendering any blinding impossible * Hepatic surgery * Contra indication for intermittent venous compression