SF-90心肺阻抗同步检测仪在呼吸阻抗图测量中的应用  

The use of SF-90 cardiopulmonary impedance monitor for measuring tidal volume and ventilation

作　　者：程九华[1] 鲍岚[1] 程宏伟[1] 张立藩[1] 董秀珍[2] 

机构地区：[1]第四军医大学航空生理学教研室 [2]第四军医大学医学电子工程学教研室

出　　处：《第四军医大学学报》1993年第2期96-100,共5页Journal of the Fourth Military Medical University

摘　　要：作者报道了SF-90心肺阻抗同步检测仪在呼吸阻抗图测量中的应用及其测试条件与限制因素.以10名健康男性青年为被试者,采用片状电极,观测了呼吸阻抗图的阻抗变化量并与电子肺量计同步测得的潮气量进行比较.结果表明:①在潮气量保持一定时,当探测电极间的距离从10cm逐步增至26cm时,胸腔阻抗变化量也相应增大.②由呼吸阻抗图测得的胸腔阻抗变化量与电子肺量计测得的潮气量之间,呈非常显著的正相关关系(N=30,R=0.898,P<0.01).③同一个体在不同测量时间或不同个体之间,其胸腔阻抗变化量与潮气量间的线性关系均存在显著差异(P<0.01).故如欲准确测量潮气量,须在每次测量前均用肺量计进行校准.This paper reports the application of SF-90 cardiopulmonary impedance monitor in the measurement of tidal volume and ventilation. Impedance changes obtained from the impedance pneumograph and simultaneous tidal volumes from the spirogram were compared on ten healthy male subjects. The results showed that: (1) As the tidal volume was kept at a definite level and the distance between the two detecting electrodes increased from 10 to 26 cm progressively, or electrode size enlarged, the changes of impedance amplitude also increased; (2) The values obtained from impedance pneumogram were highly correlated with those from spirogram (N=30, R=0.898, P< 0.01 ); (3) Linear regressive relations between impedance changes and tidal volumes were significantly different (P <0.01 ) among different individuals, or in the same subject at different times. Therefore, for quantitative measurement, it is necessary to calibrate the impedance pneumograph by using a spirometer each time.

关 键 词：呼吸阻抗图 肺气量图 潮气量 电极 

分 类 号：R444[医药卫生—诊断学]