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第Ⅱ度房室传导阻滞文氏现象于1899年已有报道。其心电图特点是指在一个心室漏搏后的第一次搏动时,其 P-R 间期比较短,嗣后每一个搏动的P-R 间期都逐渐增长,直至最后 P 波不能传入心室,发生心室漏搏。此后,这种现象又循环地重复出现。所谓文氏现象变异型,P-R 间期的改变和 QRS 波漏搏或传导之间的关系,与上述典型文氏现象差别较大,有时也易与第Ⅰ度房室传导阻滞、第Ⅱ度房室传导阻滞莫氏Ⅱ型混淆,另外在产生的机制、病因及预后等方面,也有某种程度的不同。因此从心电图上识别这种文氏现象的变异型,具有一定临床意义。
The second degree atrioventricular block Wen Wen phenomenon has been reported in 1899. The characteristics of the electrocardiogram is a ventricular pulse after the first beating, the PR interval is relatively short, then each beating PR interval gradually increased until the last P wave can not be introduced into the ventricle, ventricular leak occurred . Since then, this phenomenon repeated again and again. The so-called Wen’s phenotype variation, PR interval changes and QRS wave leakage or conduction between the relationship with the typical Wen’s phenomenon is quite different, and sometimes easy with the first degree atrioventricular block, the second degree Atrioventricular block of Mohs II confusion, the other in the mechanism of production, etiology and prognosis, there are some differences. Therefore, from the ECG to identify this type of Wen’s mutation, has some clinical significance.