Comparison Between Bispectral Index and Minimum Alveolar Concentration as Monitors for Depth of Anaesthesia and Recovery Profile Using Desflurane for General Anaesthesia

Introduction: To enhance recovery, we can use short acting agents and monitor depth of anaesthesia. Desflurane is less soluble in blood and has good emergence characteristics. Traditionally, MAC was used to assess the depth of anaesthesia and to aid in recovery from anaesthesia. Recently, Bispectral index (BIS) monitor has gained popularity for monitoring the depth of anaesthesia. The present study aims to compare the efficacy of BIS and corrected MAC as monitors for the depth of anaesthesia and the recovery profile of patients undergoing surgery under general anaesthesia Patients and Methods A prospective randomised comparative double blinded study was conducted. Sixty patients in the age group of 18–65 years were scheduled for mastectomy surgery under general anaesthesia with ASA grade 1 and 2 were included in the study and were randomly divided into two groups. Group B: Desflurane concentration was adjusted to maintain a BIS value of 45–55. Group M: Desflurane concentration was adjusted to maintain a target age-corrected MAC of 0.8–1.3 Results: Patients monitored with BIS had faster awakening and less consumption of desflurane. Conclusion: With the use of BIS monitor, there is less anaesthetic gas consumption and early recovery from anaesthesia, which makes it a superior choice for monitoring the depth of anaesthesia.