A system for measurements of micturition urethral cross-sectional areas and pressures
A system for measurements of micturition urethral cross-sectional areas and pressures
复制标题
一种测量排尿尿道横截面积和压力的系统
DOI：
10.1007/bf02442637
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发表时间：
1983
影响因子：
3.2
通讯作者：
H. Rask
中科院分区：
文献类型：
--
作者：
S. Mortensen;J. Djurhuus;H. Rask
描述了一种用于测量尿道尿流横截面积和压力的系统。该系统包括：（1）一个带有电极的4 French规探针，用于横截面积的电阻抗测量和用于压力测量的侧孔;（2）一个电场发生器和阻抗检测部分;（3）一个侧孔灌注和压力测量部分。线性横截面积测量值在0-38 mm 2范围内，与管腔的形状无关，轴向分辨率约为7 mm。测量时间常数为0·38 s和闭合压力，闭合后压力增加率为0·85 kPa s-1。尿道粘膜的电分流的影响示出允许这一点，提供的阻抗的粘膜在封闭的尿道中测量在每个病人的调查。
A system for the measurement of urethral urinary stream cross-sectional areas and pressures is described. The system consists of: (1) A 4 French gauge probe with electrodes for the electrical impedance measurement of cross-sectional areas and side-holes for pressure measurements (2) an electrical field generator and impedance detecting section and (3) a side-hole perfusion and pressure measuring part.Thein vitroperformance of the system is: linear cross-sectional area measurement in the range of 0–38 mm2, independent of the shape of the lumen and with an axial resolution of approximately 7 mm. Measurement of hydrostatic pressures with a time constant of 0·38 s and of closure pressures with a post-occlusion pressure increase rate of 0·85 kPa s−1.In vivocross-sectional areas are calibrated in a standard made of PVC. The influence of the electrical shunting of the urethral mucosa is shown to permit this, provided that the impedance of the mucosa in the closed urethra is measured in each patient investigated.