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例1 男,27岁。临床诊断:风湿性心脏病,二尖瓣狭窄及关闭不全。ECG(图1)示:基本节律为窦性,可见呈二联律出现的联律间期固定(0.44s)的室性早搏(简称室早),呈A、B两型交替。因以往图曾记录到典型多源室早及成对室早,故可除外交界性早搏二联律伴左右束支阻滞交替出现的可能。
Example 1 male, 27 years old. Clinical diagnosis: rheumatic heart disease, mitral stenosis and incomplete closure. ECG (Figure 1) shows: The basic rhythm is sinus, showing a bipolar law appears in the interventricular septal fixed (0.44s) of ventricular premature beats, referred to as A, B two types of alternating. Due to the past map has been recorded to a typical multi-source early and early pairs of rooms, it can be excluded in addition to bilateral presymptomatic premature beats with left and right bundle branch block may occur alternately.