患者男性,47岁,心律失常来院检查,未发现其它心脏病。心电图(附图,见第240页)示频繁房性早搏形成双联律,房早具有相同的联律间距约0.34s,P’波为下传型,重叠在其前窦性心动的T波上。P’波的房室传导有如下规律,Ⅱ导联房早呈2:1传导,一次下传(P’-R为0.42s),一次未下传。而aVR及aVF导联房早下传呈3:2文氏现象,造成一种特殊类型的交替性文氏现 Male patient, 47 years old, hospitalized with arrhythmia and found no other heart disease. ECG (with photos, see page 240) showed frequent atrial premature beats to form a dual law, room early with the same joint spacing of about 0.34s, P ’wave for the next type, overlapping in its pre-sinus beating T wave on. P wave of atrioventricular conduction has the following rules, Ⅱ lead room as early as 2: 1 conduction, a down (P’-R to 0.42s), one did not pass. The aVR and aVF lead room early reported 3: 2 Wen’s phenomenon, resulting in a special type of Alternating Wen’s