Randomized controlled trial (1:1) in two parallel groups, multicentric, open-label, comparing two locoregional anesthesia (LRA) techniques as integral parts of multimodal analgesia: the control group will benefit from epidural anesthesia, while the experimental group will benefit from bilateral placement of catheters in the sheath of the rectus abdominis muscles.
ASA (American Society of Anesthesiologists) Class I-IV adult, with programmed midline laparotomy
Have given an informed written consent
Able to read and understand french language
Affiliation to a social security system
Local anesthesic contraindication (allergy, porphyria, haemolytic anaemia, uncontrolled epilepsy, or severe cardiac conduction disorders) or TEA (coagulation disorders, progressive neurological disease, or severe spinal disorder),
Epidural analgesia contraindication
With impossibility to set up bilateral rectus sheath block
Participation in another clinical study