%0 Journal Article
%T 心电图机与人体连接是串联还是并联？<br>Electrocardiograph connected to the human body inseries or parallel?
%A 李亚林
%J 医学争鸣
%D 2016
%X 传统心电理论认为心电放大器的输入阻抗和人体内阻抗再加上电极与人体接触电阻在电路上为串联形式；电学界认为心脏活动程序而产生闭合电路动作电流在胸部容积导体内流动，胸部介质可以被认为是这个等效心电信号发生器的电阻负荷。通过衍画出心电图机与人体连接的模拟电路图分析，非测试时，心电与人体自身的阻抗以及皮肤电阻呈串联；测试时，心电图机与皮肤电阻并联后共同与心电以及人体自身的阻抗才构成串联。<br>In the traditional electrocardiographic theory, the input impedance of electrocardiograph (ECG) amplifierand the impedance of human body, the contact resistance of the electrode and the human body are defined as a series.But in electrical field, it is deemed that the action current of the closed circuit generated by cardiomotility flows in thechest volume conductor, and chest media can be considered as equivalent resistance load of the ECG signal generator.Through the analysis of the analog circuit diagram of connection between ECG machine and human body, when non-test,ECG connected to skin resistance and body’s own impedance are considered as a series; when test, ECG is joined to skinresistance in parallel, and then the two and ECG and the body’s own impedance constitute a series
%K 心电图机
%K 皮肤电阻
%K 串联
%K 并联<br>electrocardiograph
%K skin resistance
%K series
%K parallel
%U http://yxzm.paperonce.org/oa/DArticle.aspx?type=view&id=201605009