[机械通气和呼气末正压对中心静脉压的影响]
[Effects of mechanical ventilation and positive end-expiratory on central venous pressure].
作者信息
Yang Li-ming, Tan Jing, Yang Wan-li
机构信息
Department of Critical Care Medicine, Affiliated Taiyuan Steel General Hospital, Shanxi Medical University, Taiyuan 030003, China.
出版信息
Zhonghua Yi Xue Za Zhi. 2011 Jul 19;91(27):1884-5.
OBJECTIVE
To investigate the effects of mechanical ventilation and positive end expiratory pressure (PEEP) on central venous pressure (CVP).
METHODS
Forty cases of respiratory failure with mechanical ventilation were enrolled. Catheter was inserted via subclavian vein in each. And then CVP was measured without mechanical ventilation and under different PEEP conditions of 0, 6 and 12 cm H2O.
RESULTS
Mechanical ventilation could affect the levels of CVP, P(peak) ≈ PS+PEEP, followed PEEP, t = 3.364, P = 0.006. There was significant difference was found among the three groups, F = 15.293, P = 0.000. And CVP increased with a rising level of PEEP.
CONCLUSION
Mechanical ventilation and PEEP affect the accuracy of CVP.
目的
探讨机械通气及呼气末正压（PEEP）对中心静脉压（CVP）的影响。
方法
纳入40例机械通气的呼吸衰竭患者。均经锁骨下静脉置管，分别于未行机械通气及PEEP为0、6和12 cm H2O的不同条件下测量CVP。
结果
机械通气可影响CVP水平，P（峰压）≈平台压+PEEP，随PEEP变化，t = 3.364，P = 0.006。三组间差异有统计学意义，F = 15.293，P = 0.000。且CVP随PEEP水平升高而升高。
结论
机械通气及PEEP影响CVP的准确性。
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