A Cross Sectional Study on Correlation Between Bispectral Index, End Tidal Sevoflurane Concentration, Difference in Inspiratory and End Tidal Oxygen Concentration for Anesthetic Depth Monitoring in Pediatric Patients Undergoing Short Surgeries

Introduction: Maintenance and monitoring of adequate depth of anesthesia in pediatric population is of utmost importance as it can lead to long term psychological and behavioral effects. There are various modalities for assessing depth of anesthesia. None of them can be claimed the best especially in pediatric population. In this study we evaluated the prevailing indices and correlation between them. Materials and methods: The present study entitled ‘A cross sectional study, conducted in All India Institute of medical sciences, Rishikesh. The primary outcome was to correlate the difference of inspired and end-tidal oxygen concentration [(Fi−Et) O2%] with ETsevo at various predefined time points. We investigated and tried to validate the derived cut-off value of (Fi−Et) O2% which corresponds with lighter anesthetic plane (MAC<0.6). Secondary outcome was to correlate BIS with ETsevo as well as BIS with (Fi−Et) O2% at similar predefined time points. Data were coded and recorded in MS Excel spreadsheet program. SPSS v23 (IBM Corp.) was used for data analysis Results: While there was significant difference compared to baseline in each parameter following anesthesia serving as indicators of good depth of anesthesia, neither the correlation of (Fi-ET) O2% was statically significant with ETsevo and BIS, nor the correlation of BIS and ETsevo was statically significant contrary to findings of previous authors. Conclusion: ETsevo concentration hold their ground and BIS monitoring and monitoring of (Fi-ET) O2% look promising and congruent.