Murr R, Berger S, Schürer L, Peter K, Baethmann A
Institute of Anaesthesiology, Klinikum Grosshadern, Germany.
Pflugers Arch. 1994 Feb;426(3-4):348-50. doi: 10.1007/BF00374792.
A new device was developed for rapid assessment of PO2 values in viable tissue, such as the brain, using a multiwire surface electrode. The instrument utilizes a phonograph-like construction with weightless suspension of the electrode which thus minimizes surface pressure and allows for compensation of brain movements. The new and original component of the present device is the motor-driven, servo-controlled rotation of the PO2 electrode around its vertical axis. This enables PO2 measurements from precisely defined locations. From values measured on rabbit brain surface a PO2 histogram was constructed. The mean PO2 and distribution histogram were similar to those obtained with a needle electrode. The novel device, therefore, enables accurate and fast tissue PO2 measurements with minimal risk of brain damage.
一种新设备被开发出来，用于使用多线表面电极快速评估诸如大脑等活组织中的氧分压（PO2）值。该仪器采用留声机式结构，电极采用无重量悬挂，从而将表面压力降至最低，并能补偿脑部运动。本设备的新颖独特部件是氧分压电极围绕其垂直轴的电动、伺服控制旋转。这使得能够从精确界定的位置进行氧分压测量。根据在兔脑表面测得的值构建了氧分压直方图。平均氧分压和分布直方图与用针电极获得的相似。因此，这种新颖的设备能够进行准确、快速的组织氧分压测量，同时将脑损伤风险降至最低。
