心电图机的性能好坏,直接关系到临床诊断。心电图工作者有时会遇到这种情况,对描记的一幅不正常心电图产生了怀疑,但拿不准是由于心脏病理改变,还是由于机器出了故障?因此,从事心电图工作的同志都希望能够随时知道自己所使用的机器是否正常。本文从八个方面介绍不借助仪器检验心电图机性能的方法。增益所谓增益就是放大倍数,也就是对心电信号放大的灵敏度。它是用向心电图机输入一毫伏电压时描笔偏转的毫米数来表示,一般心电图机的最大灵敏度可高至20毫米/毫伏(即向心电图机输入一毫 ECG performance is good or bad, is directly related to clinical diagnosis. Electrocardiographers sometimes encounter this situation, doubts about an abnormal electrocardiogram traced, but is it due to the change of heart pathology or the failure of the machine? Therefore, the comrades working on ECGs hope to be able to Always know the machine you are using is normal. This article from eight aspects of not using the instrument to test the performance of the ECG machine method. Gain The so-called gain is the magnification, which is the sensitivity of the ECG signal amplification. It is used to enter a millivolt electrocardiogram Pen deflection deflection of the millimeters to indicate the general maximum sensitivity of the electrocardiograph up to 20 millimeters / millivolt (that is, to the ECG input