Aspect和HXD国产脑电双频指数仪的临床评估

Clinical Comparison and Evaluation of Aspect and HXD Bispectral Index Monitors

目的研究Aspect和HXD脑电双频指数监测仪 (BIS)与麻醉镇静程度的相关性以及两者的差异性。方法根据麻醉分级术前评估标准ASA ,10例Ⅰ～Ⅱ级女性行普外或妇科手术病人 ,于同一病人同时连接两台BIS仪 ,分为H组和A组 ,以警觉 /镇静 (OAA/S)作为镇静评分 ,记录麻醉诱导及苏醒过程中BIS的变化值 ,并记录其血压(MAP)、心率 (HR)。麻醉诱导和维持异丙酚采用靶控输注技术 (TCI) ,调整异丙酚的靶浓度 ,使BIS值维持在 4 0～ 6 0之间。分析麻醉诱导和苏醒期OAA/S分别为 5、4、3、2时两组的BIS值、MAP、HR值。 结果两组的BIS与OAA/S的相关性均接近于 1(P <0 .0 1)。配对t检验无显著性差异 (P >0 .0 5 )。MAP和HR与OAA/S无相关性 (P >0 .0 5 )。 结论Aspect和HXD都能很好地反映麻醉的镇静程度 ,而且HXD的性能与Aspect相似 。

Objective To observe the correlation of OAA/S with bispectral index monitors (Aspect and HXD) made from different companies and to compare the performance of the two machines. Methods Ten ASA Ⅰ ～ Ⅱ female patients scheduled for elective surgery were included in study. Both Aspect and HXD were connected to one patient at the same time. Anesthesia was induced and maintained by intermittent injections of fentanyl and target controlled infusion of propofol which was stopped at the end of surgery. Anesthesia was also maintained by constant pumping of vecuronium infusion. During the period of induction and recovery, both BIS values and haemodynamic parameters were recorded using OAA/S as the sedation grade and their correlation with sedation degree was analysed. Results BIS from Aspect and from HXD both correlated with OAA/S significantly(P<0.01). MAP and HR did not correlate with OAA/S. Group H had no significant difference compared with group A(P>0.05). Conclusion Both Aspect and HXD are machines equally efficient indicators for detecting the levels of consciousness and sedation during anesthesia. The function of HXD machine is just the same as Aspect.