Wide QRS complex tachycardia was the common clinical cardiovascular emergency case and it was occurred in ventricular tachycardia (VT) or supraventricular tachycardia (SVT).
宽qrs波群心动过速是临床常见的心血管急症，可见于室性心动过速和室上性心动过速。
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Finally, the complex voltage variations for left ventricular in relation to ECG diagnosis of LVH are discussed.