Newborn Infant Parasympathetic Evaluation (NIPE) Index After Standardized Tetanic Stimulations Under General Anesthesia

NIPE monitor connected to the anesthetic station. No part of the device in contact with the patient. No action on patient or anesthesia. Automatic recording of Heart rate and NIPE index during the study period.

"Three tetanic stimulations will be performed (10-30 and 60 milliamps) under general anesthesia, before surgical incision.~Stims performed via the muscle relaxation monitor (used in standard practice in this population) Each stim lasts for 5 seconds. Interval between two stims : 3-5 minutes Order on intensities randomized by a latin square of order 3."