心室复极差力(Ventricular gradient)的测定,主要在于鉴别T波改变是原发性的还是继发性的。在临床心电图学上,原发性T波改变表明心肌有病理变化,继发性T波改变则无重要临床意义。什么是心室复极差力?由于心室肌内外膜的温度、压力等因素的差别,使心室在复极方向、方式和速度等方面与除极迥然不同,从而所产生的一种向量,即是心室复极差力。在图1中,OR表示心室除极向量(QRS向量), Ventricular gradient ventricular gradient determination, mainly in the identification of T wave changes are primary or secondary. In clinical electrocardiography, primary T wave changes indicate that the pathological changes of myocardium, secondary T wave changes have no important clinical significance. What is the ventricular repolarization? Ventricular ventricular myocytes due to temperature, pressure and other factors, so that the ventricular repolarization direction, mode and speed and other aspects very different from the pole, resulting in a vector that is Poor ventricular repolarization. In Figure 1, OR represents the ventricular depolarization vector (QRS vector)