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例1 患者自3岁时发现有先心病,肺静脉畸形、完全性右束支传导阻滞伴显著的右心室扩大。心电图:术后20天时,V_1导联显示 QRS 波群呈qR 型(系由于完全性右束支传导阻滞伴右心室肥厚所致)。P 波频率约为200次/分,房室传导可见在2:1下传的基础上,P-R 间期,逐渐延长至连续两个 P 波不能下传至心室,以后此种情况反复出现。例2 患者因先心病,室间隔缺损而住院准备行间隔修补手术治疗。术前全面检查时记录的心电图常规12导联,为分析心律不齐仅以一条 V_1导联为准加以说明:P 波直立,频率为280次/分,QRS
Example 1 Patients with congenital heart disease, pulmonary venous malformations, complete right bundle branch block, and significant right ventricular enlargement were found at 3 years of age. ECG: At day 20 postoperatively, the V_1 lead showed a qR type of QRS complex (due to complete right bundle branch block and right ventricular hypertrophy). P wave frequency of about 200 beats / min, atrioventricular conduction can be seen in the 2: 1 downlink based on the P-R interval, gradually extended to two consecutive P-wave can not be downloaded to the ventricular heart, after this situation recurring. Example 2 patients were hospitalized for congenital heart disease, ventricular septal defect prepared for interval repair surgery. Preoperative preoperative ECG recorded routine 12 lead, for the analysis of arrhythmias subject to only a V_1 lead to explain: P wave upright, a frequency of 280 beats / min, QRS