No more potentiel patients for study

The paravertebral block is an alternative in the analgesia epidural the major interest of which lives in the catheterisation of the paravertébral space allowing to assure/insure an one-sided continuous analgesia.

The main objective of the study is to bring to light the superiority of the continuous paravertébral block, as a supplement to analgesia, in the care of the renal and\or adrenal surgery by laparotomy at the adult in terms of consumption of morphine, with regard to the classic analgesia classic.

The main assessment criterion is the consumption of morphine within first 24 postoperative hours at the patients benefiting from a paravertébral continuous block besides the classic systematic analgesia.

Inclusion Criteria:

• Age > 18 years
• Patient scheduled for renal and/or adrenal surgery
• American Society of Anesthesiologists score ASA I, II, III
• Written informed consent given by the patient

Exclusion Criteria:

• Contraindication in the loco-regional anesthesia in the products of local anesthetic
• Surgery as a matter of urgency
• Pregnancy
• Congestive Cardiac insufficiency
• Severe hepatic Incapacity
• Disturbs of the coagulation
• Age < 18 years
• ASA IV
• Patient already participating in a study or deadline 3-month-old subordinate since the end of a previous study
• Under guardianship Patient
• Psychiatric pathology or limitation of the intellectual abilities making difficult the understanding of the subjective questions.