Patent ID: 7878982

Claim:
An anesthetic process comprising the steps of: providing an anesthetic administrating device capable of administrating a plurality of anesthetics to a patient; operating said anesthetic administrating device thereby administrating a plurality of active anesthetic ingredients to the patient; providing an information management system receiving data from said anesthetic administrating device; providing a plurality of models connected to said information management system, said models: determining a concentration of each of the active anesthetic ingredients at a site of action; determining a potency of each of the active anesthetic ingredients from the determined concentrations of each active anesthetic ingredient at the site of action; determining an interaction relationship between each of the active anesthetic ingredients; combining the potencies according the interaction relationship to obtain a combined potency of all the plurality of active anesthetic ingredients; converting said combined potency to a Noxious Stimulus Response Index (NSRI), said NSRI being a one-dimensional parameter having a full scale range with a first endpoint of said range indicating an alert and non-anesthetized patient, and with a second endpoint of said range indicating a deepest anesthesia, said NSRI being calculated by NSRI = 100 * ( 1 - ( N / N ′ ) sl 1 + ( N / N ′ ) sl ) where: N is the combined potency; N′ is a specific value at which an NSRI of 50% is reached; and sl is a slope factor for the transformation of N into NSRI; providing a display connected to said models; displaying the NSRI on said display.