全麻诱导不同通气方式对中心静脉压的影响

目的探讨全身麻醉诱导时低潮气量高频率辅助通气与高潮气量低频率辅助通气对中心静脉压的影响,选出对循环血流动力学影响较小的辅助通气方式。方法选择2010年3月～2011年7月于江门市中心医院行全身麻醉的患者120例,随机分为两组,每组60例。Ⅰ组在全麻诱导准备插管前采用低潮气量高频率辅助通气,Ⅱ组在全麻诱导准备插管前采用高潮气量低频率辅助通气,全程监测心率、血氧饱和度、平均动脉压、中心静脉压,分别记录患者在全麻诱导前、全麻诱导时、气管插管后的中心静脉压值（CVP）,比较两组CVP值的变化。结果全麻诱导前及气管插管后两组CVP值差异无统计学意义（P〉0.05）,全麻诱导时Ⅱ组CVP值明显比Ⅰ组低,差异有统计学意义（P〈0.05）。结论全麻诱导时低潮气量高频率辅助通气对CVP的影响小,较高潮气量低频率辅助通气对CVP的影响较大,但持续时间很短,在气管插管后,这种影响即消失

The influence of different adjuvant ventilation modes on CVP in patients during the general anesthesia induction

Objective To discuss the influence of different adjuvant ventilation modes(low tidal volume with high respiratory rate and high tidal volume with low respiratory rate) on CVP in patients during general anesthesia induction.And to find out a adjuvant ventilation mode which had a less influence on CVP.Methods 120 patients practised general anesthesia in the central hospital of Jiangmen from March 2010 to July 2011 were enrolled for the study.They were randomly divided into two groups.Each group had 60 patients.The patients in group Ⅰ were practised the adjuvant ventilation mode of low tidal volume with high respiratory rate during the general anesthesia induction,and the patients in group Ⅱ were practised the adjuvant ventilation mode of high tidal volume with low respiratory rate.All of them were monitored HR,SpO2,MAP,CVP.The CVP of two groups were compared.Results Before general anesthesia and after tracheal intubation,CVP of two groups had no difference(P > 0.05).During the general anesthesia induction,CVP of group Ⅱ was obviously lower than group Ⅰ(P < 0.05).Conclusion High tidal volume with low respiratory rate has a larger influence on CVP,but this influence sustains only a short time,it disappears after tracheal intubation.