Narcotrend麻醉深度监测仪用于全麻苏醒期患者意识恢复预测的评价

The predictive effect of Narcotrend monitor on consciousness recovery during emergence of general anesthesia

目的观察Narcotrend(NT)麻醉深度监测仪对于全麻苏醒期患者意识恢复的预测效能。方法选择34例ASAⅠ或Ⅱ级在全身麻醉下择期行腹部手术的患者,手术期间通过异氟醚吸入维持麻醉。术毕入麻醉苏醒室,采用NT监测麻醉深度,在对刺激无反应、呼之睁眼、定向力恢复时记录NT分级(NTS)和NT指数(NTI)、MAP和HR,计算比较这些参数对应意识变化的预测概率(Pk)。结果NTS、NTI与患者苏醒期意识水平的变化显著相关(P<0.01)。NTS、NTI预测患者睁眼时Pk值分别为0.693和0.692,预测患者恢复定向力时Pk值分别为0.837和0.824,均显著高于0.5(P<0.01),也高于MAP和HR对应的Pk数值(P<0.01)。结论NT麻醉深度监测指标能够及时有效反映全麻苏醒期患者意识水平的变化。

Objective To evaluate the predictive effect of Narcotrend（NT）parameters on consciousness recovery during the emergence of general anesthesia. Methods Thirty-four ASA Ⅰ or Ⅱ patients undergoing elective abdominal surgery were anesthetized with isoflurane. After surgery, the patients were transferred to the postanesthesia care unit （PACU） and monitored by NT. The values of NT stage （NTS）, NT index （NTI）,and hemodynamic parameters （ MAP and HR） were recorded during the period of non-reaction to the stimulation, at the time of eyes opening and orientation recovery. The prediction probability （Pk） of each parameter was calculated and compared. Results NTS and NTI were correlated well with the changes of consciousness during anesthesia emergence. Pk values of NTS and NTI in predicting eyes opening and orientation recovery were 0. 693, 0. 692, and 0. 837,0. 824,respectively, and were obviously higher than 0.5 and the Pk values of MAP and HR （P〈0.01）. Conclusion Narcotrend monitor can be used for predicting patients＇ consciousness recovery effectively during the emergence of general anesthesia.