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虽然人们对心房负荷增加时心房除极的改变进行了许多研究,但目前国内尚乏一明确的向量心电图左房超负荷诊断标准。Ish-
Although many studies have been made on the changes of atrial depolarization when the atrial load increases, there is still no definite diagnostic standard of left ventricular overload in vector. Ish-