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一、U波的成因 U波的成因尚未明确,这是因为还没有获得直接证据的技术。迄今假说很多,其中被认为重要的学说有: 1.Purkinje复极说根据Hoffman和Cranefild提出的假说,U波是Purkinje系的复极过程,相当于心室肌的T波。其根据是Purkinje纤维的动作电位比心室肌的还长,在时间上,该复极的第三相与U波一致。另外的根据是钾可给U波以很大的影
First, the cause of U wave U wave of the cause is not yet clear, it is because there is no direct evidence of technology. Hypothesis so far, of which the doctrine is considered important: 1. Purkinje repulsion According to Hoffman and Cranefild’s hypothesis, U wave Purkinje system repolarization process, equivalent to ventricular T wave. The reason for this is that the action potential of Purkinje fibers is longer than that of the ventricular muscles, and in time, the repolarized third phase is consistent with the U wave. Another basis is that potassium can give U waves a great shadow