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患者女性,25岁,因腹泻,呕吐来院就诊,诊断为急性胃肠炎。有先天性心脏病、房间隔缺损、心律失常史,心功能Ⅰ级。附图为Ⅱ导联连续记录,有如下特点: 1.一系列倒置的P~-波,形态一致。为起源于房室交界区上部节奏点(N)逆传至心房所致。P~-R或R-P~-多无固定关系。p~-p~-间期渐短突长呈典型的5∶4结房文氏周期,P_2~-P_6~-间距4.60秒,则异位周期=4600/(4+1)=P_2~--P_6~-间距4.60秒,则异位周期920毫秒,频率65次/分。为加速性房室交界性自主心律。在R_(10)起始部前可见一双向p波,是窦性P波与逆传P~-波形成的房性融合波。R_(12)终末部后可见直立窦性P波,此外
Female patient, 25 years old, was hospitalized for diarrhea and vomiting and was diagnosed as acute gastroenteritis. Congenital heart disease, atrial septal defect, arrhythmia history, cardiac function level. The figure for the II lead continuous recording, has the following characteristics: 1. A series of inverted P ~ - wave, the same form. Originated in the atrioventricular junction of the upper rhythm point (N) caused by the retrorse to the atrium. P ~ -R or R-P ~ - no more fixed relationship. P ~ -p ~ - interphase shortening is a typical 5:4 room Wengen cycle, P_2 ~ -P_6 ~ spacing 4.60 seconds, the ectopic cycle = 4600 / (4 +1) = P_2 ~ -P_6 ~ - pitch 4.60 seconds, the ectopic period of 920 milliseconds, the frequency of 65 beats / min. To speed up the atrioventricular junctional rhythm. In the beginning of R_ (10) shows a bi-directional p-wave, sinus P wave and reverse P ~ - wave formation of atrial fusion. R_ (12) terminal erect sinusoidal P waves can be seen, in addition