Objective To compare the narcotrend (NT) and bispectral (BIS) in monitoring stress reactions to tracheal intubation in gynecological patients during the general anesthesia induction period. Methods Forty ASAⅠ-Ⅱgynecological patients underwent operation under general anesthesia. Their BIS and NT indexes, mean arterial pressure (MAP) and heart rate (HR) were recorded before anesthesia induction, at falling in sleep and tracheal intubation, and 1 min after tracheal intubation, respectively. Results The BIS and NT indexes were significantly lower at falling in sleep and tracheal intubation and 1 min after tracheal intubation than before tracheal induction, and significantly higher after tracheal intubation than at falling in sleep (P<0.01). The MAP and HR were higher after tracheal intubation than before tracheal induction (P < 0.01). No significant difference was found in BIS index at tracheal intubation and 1 min after tracheal intubation. However, the NT index was significantly higher 1 min after tracheal intubation than at tracheal intubation (P<0.05). The BIS and NT indexes reflecting the stress reactions to tracheal intubation were linearly correlated (r 2=0.916, P < 0.05). Conclusion BIS and NT indexes can show the stress reactions to tracheal intubation during the general anesthesia induction period and are positively correlated.% 目的比较脑电双频监测和Narcotrend监测对全麻下诱导气管插管期间的应激反应变化。方法选择美国麻醉医师协会分级Ⅰ~Ⅱ的患者40例，择期全麻下行妇科手术，分别记录诱导前、入睡时、插管时、插管后1 min的脑电双频指数(bispctral，BIS)值、NT值、平均动脉压、心率。结果与诱导前比较，入睡时、插管时、插管后1 min的BIS值和NT值都有所下降(P＜0.01)。与入睡时比较，插管后的BIS值和NT值都有所升高(P＜0.01)，平均动脉压及心率也有所升高(P＜0.01)。但与插管时相比，插管后1 min的BIS值差异无统计学意义，而NT值差异有统计学意义(P＜0.01)。在麻醉诱导期间，BIS值和NT值反映气管插管应激反应的脑电监测变化呈线性相关(r2=0.916，P＜0.05)。结论脑电双频指数和Narcotrend指数能很好地反映麻醉诱导期间气管插管的应激反应变化，且二者呈正相关。
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