Monitoring Analgesia by ANI (Analgesia The Nociception Index)

Monitoring Analgesia by ANI (Analgesia The Nociception Index) During Surgery Inflammatory Bowel

The objective of this research is to study the variations of the ANI(Analgesia The Nociception Index) according to 2 periods: the "NoStim" period before surgical incision under general anesthesia and the period of hemodynamic reactivity "ReactHemo" peroperative. This period is defined by a 20% increase in FC and / or PAS (the only gold standard today).

Inclusion Criteria:

• patient with IBD
• Scheduled surgery: laparotomy or laparoscopic resection with high risk of laparo-conversion

Exclusion Criteria:

• patient included in another current study or the previous month
• urgent surgery
• toxicomania or receiving opioids preoperatively
• pregnant woman
• psychosis
• betablocker treatment
• diabetic dysautonomia
• non-sinus heart rate
• pacemaker heart transplant