Awareness With Recall During General Anesthesia

Objective:To investigate the incidence of awareness with recall during general anesthesia in elelctive operation with modern anesthetic methods and to analyze the risk factors there of.Methods:600 patients underwent general anesthesia during different kinds of elelctive operation Interview was conducted 1-3 days postoperatively to survey the incidence of awareness during operation. A week later followed was conducted again to know if sequelae existedResults:Nine patients(1.5%)were identified as with awareness.Muhiple regression analysis showed that awareness during operation was associated with age (OR=0.934. 95%CI0.880-0.982).Six of the 9 patients with awareness during operation(67%)had auditory perception,2(22%) felt pain at different degrees,and 3 (33%)felt anxiety during operation.After effects appeared in 2 of the 9 patients(22%)Conclusion:Awareness occurs in some patients undergoing elective operation.Age is a risk factor.Patients who suffer awareness during operation without pain do not feel anxiety and no sequelae existed.