[THE CRITICAL INCIDENTS IN THE COMBINED ANESTHESIA DURING MAJOR ABDOMINAL SURGERY IN ELDERRY AND OLD PATIENTS: ROLE PREOPERATIVE LEVEL OF WAKEFULNESS.].

The Aim: to determine patterns during combined anesthesia andfrequency ofcritical incidents, depending on the initial level of wakefulness and patient age.

Materials And Methods: 158 patients of planning operated under combined anesthesia for colon tumors were divided into two groups of elderly patients (n= 79) and old (n= 79). Each group was divided into 3 subgroups, depending on level of wakefulness, the estimatedfor level of direct current potential: low, optimum and high levels ofwakefulness.