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在心电图描记中，可能会遇到某些干扰，其中主要是50HZ交流干扰和肌电干扰（见图1、图2）。下面将形成这两种干扰的原因及消除方法扼要地介绍如下：一、形成50Hz流干扰的原因及消除方法（一）原因：l，机器内部故障；2．机器接地线接触不良或折断；3．电极与皮肤接触不良或接触
In electrocardiography, some interference may be encountered, mainly 50Hz AC interference and myoelectric interference (see Figure 1, Figure 2). The causes and elimination methods of these two types of interference will be briefly described as follows: 1. Reasons for the formation of 50Hz current interference and elimination methods (1) Reasons: l. Internal faults in the machine; 2. Poor contact or broken ground wire of the machine; 3. Poor skin contact or contact