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本文报道和分析了18例频率决定的束支传导阻滞,其中冠心病较多,心电图类型有心动过速、心动过缓决定的束支传导阻滞,也有交替性频率决定束支传导阻滞,临界心率为45～115次/分,发生机制是束支传导平衡失调,以及膜电位改变影响时相3或时相4所致。有此型心电图表现的患者,大多数有器质性心脏疾患。对心肌梗塞伴有束支传导阻滞的诊断有一定鉴别价值。此外频率决定的束支阻滞较易发展为持久性束支传导阻滞。
This paper reports and analyzes 18 cases of frequency-dependent bundle branch block, including more coronary heart disease, ECG types of tachycardia, bradycardia determined bundle branch block, but also the frequency of alternative deciduous bundle branch block , The critical heart rate of 45 to 115 beats / min, the mechanism is the bundle branch conduction imbalance, as well as changes in membrane potential phase 3 or phase 4 caused. Patients with this type of ECG, most have organic heart disease. Myocardial infarction associated with bundle branch block diagnosis of a certain differential value. In addition, the frequency of the bundle branch block easier to develop persistent bundle branch block.