Kravtsova E L, Voronkov Iu I
Aviakosm Ekolog Med. 1995;29(4):52-4.
Stroke and minute cardiac volumes were simultaneously determined at rest in seven healthy male subjects aged 28-48 and 13 patients with various forms of partial insufficiency of the central hemodynamics with the use of thoracic electrical bioimpedance and Doppler echocardiography. The bio-impedance method employed IBM-compatible NCCOM3-R7. The Doppler echocardiograms were registered using TOSHIBA-50. Correlative analysis of the records was performed on 4 parameters, i.e. minute volume (MV), stroke volume (SV), cardiac index (CI), and stroke index (SI). In the group with partial insufficiency the correlation coefficient amounted to 0.89, 0.92, 0.81 and 0.92 for MV, SV, CI and SI, respectively. In healthy subjects the correlation coefficient made up 0.91, 0.90, 0.89 and 0.91 for MV, SV, CI and SI, respectively. In the combined group the correlation coefficient averaged 0.88, 0.92, 0.83 and 0.92 for MV, SV, CI and SI, respectively. These results allow to rate high the accuracy of thoracic electrical bio-impedance and recommend it for the program of medical selection and annual health check of occupational groups systematically exposed to extreme impacts.
在7名年龄在28 - 48岁的健康男性受试者以及13名患有各种形式的中枢血流动力学部分功能不全的患者静息状态下，同时使用胸电阻抗法和多普勒超声心动图测定了中风量和每分心输出量。电阻抗法采用与IBM兼容的NCCOM3 - R7。使用东芝 - 50记录多普勒超声心动图。对记录进行了4个参数的相关分析，即每分输出量（MV）、搏出量（SV）、心脏指数（CI）和搏出指数（SI）。在部分功能不全组中，MV、SV、CI和SI的相关系数分别为0.89、0.92、0.81和0.92。在健康受试者中，MV、SV、CI和SI的相关系数分别为0.91、0.90、0.89和0.91。在合并组中，MV、SV、CI和SI的相关系数分别平均为0.88、0.92、0.83和0.92。这些结果表明胸电阻抗法的准确性很高，并推荐将其用于对长期受到极端影响的职业群体进行医学选拔和年度健康检查的项目中。
