Awareness during coronary artery bypass grafting surgery

ABSTRACT

To determine the frequency of awareness in patients undergoing coronary artery bypass grafting [CABG] with cardiopulmonary bypass [CPB]. Cross-sectional Survey. Armed Forces Institute of Cardiology, Rawalpindi - Pakistan. A total of 100 patients [both males and females] of age > 18 years, undergoing elective CABG, were interviewed 24-72 hours after anesthesia using a modified Brice questionnaire. Patient's anesthesia record was consulted and the drugs and doses used at induction and maintenance of Anesthesia at different stages of the surgery were noted down. Overall frequency of awareness was found to be 5%. It was found to be less in patients who received propofol infusion during CPB compared to the patients who did not. Regular use of sedation with propofol infusion during CPB can reduce the frequency of awareness. Bispectral index [BIS] monitoring can prove to be a helpful monitor of the depth of anesthesia during CPB