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临床及心电图资料患者男性,58岁,临床诊断冠心病,心源性哮喘。心电图为连续记录的Ⅱ、V_5、V_6导联,P_Ⅱ直立窦性频率50次/分(见图Ⅱ导联倒数第1,2个P波),提示窦性心律过缓。Ⅱ导联倒数第2个心搏的P-R间期延长考虑房室干扰。第2～11个QRS波群宽大畸形时限0.14秒,频率125次/分。结合此病人平时心电图为频发房性早搏故考虑为阵发性房性心动过速(简称房速)并三位相左束支传导阻滞。Ⅱ导联第12个QRS波群正常化可能是一个文氏周期结束的缘故。V_5导联为房速,T与P重叠不易辩认,P-P相等,QRS时限逐次增宽,呈典型的文氏型左束支阻滞图形。V_5导联仍为房速。心电图系在用药过程中记录,所见Ⅱ与V_5、V_6导联频率略有不同。讨论本例心动过速时出现的左束支传导阻滞
Clinical and ECG data Male patients, 58 years old, clinical diagnosis of coronary heart disease, cardiac asthma. ECG continuous recording of Ⅱ, V_5, V_6 lead, P_ Ⅱ erect sinus frequency of 50 beats / min (see Figure II leads the first and second P wave), suggesting that sinus rhythm slow. Ⅱ leads the penultimate P-R interval of heartbeat to consider atrioventricular disturbances. The 2nd to 11th QRS complex wide deformity time limit of 0.14 seconds, the frequency of 125 beats / min. Combined with this patient usually ECG is frequent atrial premature be considered paroxysmal atrial tachycardia (referred to as atrial tachycardia) and three phase left bundle branch block. Normalization of the 12th QRS complex in the lead II may be the result of a Wen’s end of cycle. The V_5 lead was atrial tachycardia, T and P overlap was not easy to identify, P-P is equal, QRS duration widened in succession, showing a typical Venturi left bundle branch block pattern. V_5 lead is still atrial tachycardia. Department of electrocardiogram recorded in the course of medication, I saw Ⅱ and V_5, V_6 lead frequency slightly different. Left bundle branch block in this case with tachycardia is discussed