The effect of anxiety and general anesthesia implementations on the awareness of pregnant

We aimed to investigate the effects of preoperative anxiety and the anesthetic agents on the awareness of the 90 pregnant women undergoing elective caesarean operation with general anesthesia. All patients were implemented Beck Anxiety Inventory Test to assess the anxiety attitude in the preoperative period. Patients were randomized and divided into three groups. Routine hemodynamic and Bispectral index (BIS) monitorization were performed. Pneumatic tourniquet to the arm which has no vascular access was applied for isolated forearm (IFA) test. Anesthesia induction was provided using in Group P with propofol 2-2.5mg/kg, in Group T with thiopental 5mg/kg and in Group K with ketamine 1mg/kg. After loss of consciousness, the tourniquet was filled and succinylcholine bolus was implemented. Anesthetic maintenance in all groups was provided using 2% sevoflurane. After intubation, BIS and hemodynamic parameters and end-tidal sevoflurane (Etsevo) concentrations and IFA test response were recorded intermittently. Patient's Numeric Rating Scale (NRS) at the postoperative period and first analgesic requirement time were recorded. The questions in the Modified Brice Scala (MBS) were asked for postoperative awareness in the postoperative 1sth, 3rd h, 1st and 3rd day. Etsevo values reached %1.2, seven minutes after intubation for all study groups. Although BIS values for Group K were measured higher than other groups, the results of IFA test response were lower. However, we observed that according to the answers of the Group K patients to the MBS, they had much more dreaming and hearing voices rates comparing other groups. Mean arterial pressure levels in Group T and also 0.hour NRS values were founded higher than other groups, in addition to that the time of first analgesic application time was shorter. The responses for IFA test in Group P were less than Group T. Preoperative anxiety levels of all groups were similar and at low levels so we assumed that anxiety had no influence on awareness. Regarding all these factors, assessments of hemodynamic parameters, IFA test, the use of BIS, measuring of Etsevo concentrations, MBS may not sufficient to decide which anesthetic agent could be better, as describing intraoperative awareness and we assumed that interviewing patients in late postoperative period could be more convenient to detect awareness and application of propofol for induction could cause less awareness.