脑室持续外引流的压力控制问题──引流管自动控压模式探讨

Problems of Pressure Control for Continuous External Ventricular Drainage:A Study on Tube Pattern of Automatic Control of the Pressure

通过流体力学分析，对脑室引流术中脑室压的控制作重新评估。作者认为，计量脑室压的基准手面以外耳道水平为宜；引流管分布模式应不仅能将稳定状态的脑室压控制于生理范围，还能缓冲颅内压的剧烈波动，引流管最高点高度和末端高度均为控制脑室压的重要因素，引流管中段和末端过低均可致颅内低压。本文提出了较理想的引流管分布模式。

The control of fluid pressure during continuous ventricular drainage was reeva1uated by hydromechanicalAnalysis. Auditory meatuses form a good datum p1ane for the measurement of the fluid height in the ventriculardrainage tube. The arrangement of the drainage tubes should not only restrict ventricular pressure of stablestate to physiological range, but a1so have buffer effect on fluctuations of the pressure. The height of the peak pointand that of the tube end are both primary factors controlling ventricular fluid pressure. If tube end or central section of the tube is 1aid too low, the ventricular nuid pressure could decrease markedly under certain situations. Anideal pattern of the tube arrangement was proposed in the paper.