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例1,男性,56岁,发现心动过缓、心律不齐4年余,近因心率时快时缓并感心慌、胸闷来就诊。以往心电图有窦性静止,交接性逸搏。其它检查未见异常.拟诊为病态窦房结综合征。图1为心电图Ⅱ、avF 导联连续记录.未见窦性 P 波.P 波均为逆传型,频率72/min,房律齐.为非阵发性交接性心动过速逆传所致。QRS 波呈室上性,时限0.07s,R-R 间期有两种,长 R-R 间期0.70s.其 QRS 波频率为85/min,前后可见无关的逆行P 波.短 R-R 闻期0.50s,其中间有一逆行 P,R-P 不相等,但 P-R 间期固定为0.24s,说明此 P 波与其后的QRS 波有传导关系。心电图诊断;双重交接性心律形成不完全性房室分离。例2,男性,4岁。临床诊断:先天性心脏病,原发孔型房间隔缺损,二尖瓣前叶裂.入院后行房缺和二尖瓣裂修补术。术后一般情况尚可.心电图检查(图2A)发现房室频率不等.心房率125/min,心室率75/min,P 波
Example 1, male, 56 years old, found bradycardia, arrhythmia more than 4 years, due to the heart rate when the fast and slow, and palpitation, chest tightness to the treatment. In the past, there was electrocardiogram sinus quiescence, sexual dysfunction. No abnormalities in other tests. Sick sinus syndrome to be diagnosed. Figure 1 for the ECG Ⅱ, avF continuous recorded lead. No sinus P wave. P wave are retrograde type, frequency 72 / min, atrial Qi. Non-paroxysmal transitional tachycardia due to retrograde transfer . QRS wave was supraventricular tachycardia, the time limit of 0.07s, RR interval of two, long RR interval of 0.70s. The QRS wave frequency of 85 / min, before and after the visible retrograde P wave. Short RR smell 0.50s, of which There is a retrograde P, RP is not equal, but the PR interval is fixed at 0.24s, indicating that this P wave and subsequent QRS wave conduction relationship. Electrocardiogram diagnosis; Double handover of arrhythmia incomplete atrioventricular separation. Example 2, male, 4 years old. Clinical diagnosis: congenital heart disease, primary ostial atrial septal defect, anterior mitral mitral valve rupture after admission, atrial and mitral valve repair repair. Postoperative general condition is acceptable. ECG (Figure 2A) found that atrioventricular frequency range atrial rate 125 / min, ventricular rate 75 / min, P wave