Objective To compare and quantify the determinants in quantitative electroencephalogram(q-EEG) and heart rate variability power spectrum analysis(HRV-PSA) of ketamme(KTM) anesthesia for preschoolers.

• 目的比较学龄前儿童氯胺酮(KTM)麻醉的数量化脑电图和心率变异各指标值差异并将其量化。