METHOD FOR CONTROLLING DEPTH AND APPROPRIATE LEVEL OF ANESTHESIA IN SURGICAL ASSISTANCE Russian patent published in 1999 - IPC

FIELD: medicine. SUBSTANCE: method involves carrying out continuous analysis of sinusoid rhythm cardiac cycles activity. Their relative entropy and phase trajectory are determined in step-by-step mode in building and sequential incremental dimensions of space where the given dynamic process exists. Chaos degree criterion is calculated using density of filling selected area of the above mentioned phase space represented as two-dimensional image, with entropy measurements. Current 20% or higher excess achieved by the criterion relative to mean values is considered as homeostatic system regulation instability anticipating appearance of clinical symptoms of anesthesia protection insufficiency with respect to operation aggression. EFFECT: enhanced effectiveness in receiving warning information for correcting anesthesia in advance. 1 dwg