Subgroup analysis on sedation and postoperative complications
POSTOPERATIVE COMPLICATIONS
Alpha oscillations can be viewed to be a neurophysiological biomarker of brain vulnerability [
Examples of high(left) and low(right) alpha power within a left frontal spectral display. The vertical axis is frequency (Hz). The blue and red colors represent low and high power (dB). The horizontal axis is time (s). The dark horizontal lines present the alpha band range (8–12 Hz)
The box-and-whisker plots show the medians (thick horizontal lines) and interquartile ranges (IQRs; boundaries of the box) and ranges. Whisker boundaries are set at 1.5 × IQR. The sedation time plots depict the cumulative times in each of the study groups during which the electroencephalogram sedation ratio was > 1%
Subgroup analyses of postoperative complications