Accuracy of pulse oximeter perfusion index in thoracic epidural anesthesia under basal general anesthesia

作者：Xu, Zifeng; Zhang, Jianhai; Xia, Yunfei; Deng, Xiaoming^*

来源：International Journal of Clinical and Experimental Medicine, 2014, 7(7): 1728-1734.

• Pleth variability index
• pulse pressure variation
• stroke volume variation
• combined general
• thoracic epidural anesthesia

Objective: To observe the change of PVI after thoracic epidural block on the basis of general anesthesia. Methods: In 26 patients undergoing elective upper abdominal operations, changes of SVI, PVI, SVV, PPV and CVP were monitored immediately before and 10 minutes after T8-9 thoracic epidural anesthesia on the basis of general anesthesia. The definition was that patients with Delta SVI greater than 10% belonged to response group to epidural block. Results: Before epidural block, the PVI, SVV and PPV baseline values in patients of response group were significantly higher than those in patients of non-response group. PVI, SVV and PPV after epidural block were significantly higher than immediately before epidural block (P < 0.001). PVI, SVV and PPV baseline values immediately before epidural block were positively correlated with Delta SVI; the correlation coefficients were 0.70, 0.71 and 0.63, respectively, P <= 0.001. The optimal critical values for PVI, SVV and PPV to predict response to T8-9 gap epidural block under general anesthesia were 16% (sensitivity 80%, specificity 92%), 13% (sensitivity 90%, specificity 62%) and 12% (sensitivity 90%, specificity 77%), respectively. Conclusion: PVI can be used as a noninvasive indictor to monitor volume change after thoracic epidural block on the basis of general anesthesia.

• 出版日期2014
• 单位中国人民解放军第二军医大学; 上海交通大学