ECG Machine – 3 Channel – NSL 300G Biocare (China)

ECG Machine is used for recording the electrical activity of the心在一段时间内使用电极placed on the skin. These electrodes detect the tiny electrical changes on the skin that arise from the心muscle’电生理学模式去极化和repolarizing在每个过程中心beat。It is very commonly performed to detect any cardiac problems.

在常规的12铅ECG中，将十个电极放在患者的肢体和胸部表面上。心脏的整体大小电势然后从十二个不同角度（“铅”）测量，并在一段时间内（通常十秒钟）记录。这样，在整个心脏周期中，每一刻都会捕获心脏电去极化的总体和方向。^[4]电压与此产生的时间的图无创医疗程序是electrocardiogram。

During each heartbeat, a healthy heart has an orderly progression of depolarization that starts with起搏器细胞在里面Sinotrial节点, spreads out through the中庭, passes through theatrioventricular nodedown into thebundle of His和into thePurkinje fibers，向左散开ventricles。这种有序的去极化模式产生了特征性的心电图跟踪。

对于训练有素的临床医生，ECG传达了大量有关心脏结构及其电导系统功能的信息。^[5]Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the心chambers，对心脏肌肉细胞或传导系统的任何损害，心脏药物的影响以及植入的功能心脏起搏器。