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平均电轴在心电图学的诊断上,具有重要意义,所谓平均电轴,实际上是心电向量环在额平面上的投影,综合形成一个QRS向量。它代表了心脏除极总的电流方向及电压强度,它与心脏的空间位置,及某些疾病所致的左右心室除极异常的有关,所以其QRS总向量在额面上呈什么角度及其多大的量(长度),对诊断心脏病有一定的价值。各肢体导联的心电综合向量,是QRS向量环在额平面对各导联的投影,所以可采
The mean electrical axis is of great importance in the diagnosis of electrocardiography. The so-called mean electrical axis is actually the projection of the electrocardiographic vector loop on the forehead plane and forms a QRS vector. It represents the total depolarization of the heart current direction and voltage intensity, and its spatial location of the heart, and some diseases caused by the left and right ventricular depolarization abnormalities, so its QRS total vector on the amount of what is the angle and its How much (length), the diagnosis of heart disease has a certain value. ECG of each limb lead integrated vector is QRS vector ring in the front of the plane of the projection of each lead, so recoverable