Objective: Evaluate the performance of the encephalon state index (ESI) in depth of anesthesia monitoring during clinical surgery, compared with the bispectral index (BIS).
Methods: ESI and BIS data were collected from 60 patients in a single-center clinical trial to compare their efficacy in measuring the depth of anesthesia.
Results: Consistency analysis revealed mean differences and standard deviations of －0.18 ± 5.42 and －0.11 ± 6.51 between ESI and BIS for awake and anesthetized states, respectively. Correlation analysis showed a correlation coefficient of 0.92 throughout the operative period. Prediction probability analysis indicated that both ESI and BIS had prediction probabilities of 0.97, effectively predicting anesthesia status.
Conclusion: ESI and BIS show good equivalence in monitoring depth of anesthesia during clinical surgery, which meet the requirements of clinical anesthesia.
目的: 对比双频指数（bispectral index, BIS），探究脑状态指数（encephalon state index, ESI）在临床麻醉深度监测中的性能。.
方法: 通过单中心临床试验，采集60名患者脑状态指数（ESI）和双频指数（BIS）的数据，对比分析两者在临床麻醉深度监测中的一致性、相关性和预测概率（prediction probability, Pk）。.
结果: 一致性分析显示：脑状态指数（ESI）和双频指数（BIS）在清醒和麻醉状态下的均值差和标准差分别为－0.18±5.42，－0.11±6.51。相关性分析显示：在整个手术期间的相关性为0.92。预测概率：ESI与BIS的预测概率均为0.97，能很好地预测麻醉状态。.
结论: ESI和BIS在麻醉手术中具有较好的等效性，能够有效满足临床的麻醉监测需求。.
Keywords: anesthesia monitoring; bispectral index; depth of anesthesia; encephalon state index.