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关于心脏左束支分支阻滞问题,虽日益引人注意,但国内资料尚少。本文报告46例,就左前半与左后半阻滞的病因以及合并症等进行了分析和讨论。46例中以左前半阻滞最多见,可能与前、后支的结构、分布和血液供应不同有关。最常见的原因是冠心病,其次为高血压病。左前半或左后半阻滞均可合并完全右支阻滞,而成为双束支阻滞,后者还可发展为三束支阻滞。文中指出,在抢救发生心性脑缺氧综合征的双束支阻滞患者时,应考虑安放心脏起搏器。至于左前半阻滞合并P-R间期延长及其与心性脑缺氧综合征的关系问题,有待进一步研究。
On the left bundle branch of the heart block problem, although increasingly attractive, but domestic data is still small. In this paper, 46 cases were reported, and the etiology and complications of the left anterior and posterior left half block were analyzed and discussed. Of the 46 cases, the left anterior block was the most common, possibly related to the structure and distribution of the anterior and posterior branches and the different blood supply. The most common cause is coronary heart disease, followed by hypertension. Left anterior or posterior half block can be combined with complete right branch block, and become double bundle branch block, the latter can also develop into three branch block. The article pointed out that in the rescue of patients with myocardial infarction patients with dual-bundle branch block, should consider placing pacemakers. As for the left front of the block combined with P-R interval prolongation and its relationship with the syndrome of cardiomyopathy, the need for further study.