Detection of anomalies in measurement of level of hypnosis

摘要

The invention relates to detection of anomalies related to a measurement of the hypnotic level of a subject. In order to detect when a measure indicative of the hypnotic level of a subject is anomalous either due to a medical reason or due to an interference, the measure is monitored and state information indicative of the activity of the autonomous nervous system of the subject and drug effect information indicative of the hypnotic drug effect in the subject are employed to check whether the measure fulfills a predetermined consistency condition requiring that the measure changes consistently with at least one of the drug effect information and the state information. An anomaly, indicative of an abnormal change in the measure, is detected when the measure fails to fulfill the predetermined consistency condition.

主权项

1. A method for detecting an anomaly in a measurement of the hypnotic level of a subject, the method comprising:
monitoring using a patient monitor a change in a measure indicative of the hypnotic level in the subject; receiving at a processing unit state information indicative of the activity of the autonomous nervous system of the subject; receiving at the processing unit drug effect information indicative of the hypnotic drug effect in the subject; comparing the change in the measure to one of the drug effect information and the state information; checking with the processing unit whether the change in the measure is a consistent change with at least one of the drug effect information and the state information; and detecting with the processing unit an anomaly, wherein an anomaly is indicative that the change in the measure is not a consistent change with at least one of the drug effect information and the state information, and wherein the anomaly is indicative of an alteration in the normal relation between the measure and the at least one of the drug effect information and the state information.