100例三尖瓣下移畸形的心电图分析

The electrocardiogram analysis of 100 cases withEbstein's anomaly of the tricuspid valve

分析１００例三尖瓣下移畸形的心电图发现：１．右心房大６７％。２．Ｉ°房室阻滞４２％。３．右束支阻滞７２％。Ｖ１呈多向、错折和低电压。４．Ｂ型预激综合征１４％。５．右胸导联Ｑ波伴Ｔ波倒置１２％。６．有室上速发作确切病史２３％。我们认为紫绀型先心病患者有室上速发作史及Ｂ型预激综合征，或有右心房大、房室阻滞，尤其Ｖ１呈多向、错折和Ｒ＜１．０ｍＶ，要考虑为三尖瓣下移畸形。右心房增大的发生率随心脏增大和动脉血氧饱和度降低而升高，而ＲＶ１＜１．０ｍＶ的发生率随年龄增长和动脉血氧饱和度降低而增加。Ｐ波增高且宽和心房颤动可估测预后。

ECG patterns are analyzed in 100 cases of Ebstein's anomaly of the tricuspidvalve. The features: 1. Right atrial enlargement is about 61%; 2. The first degree atrioventric-ular block 42%; 3. Right bundle branch block 72% , the QRS waves polymorphic, frustrationand lower voltage in lead V1; 4. The type B W-P-W syndrome 14%; 5. Q waves with invertedT waves in right precordial leads 12%; 6. With paroxysmal of supraventricular tachycardias32%. We consider that the patient with cyanotic type congenital heart disease and a type B W-P-W syndrome with paroxysmal of supraventricular tachycardias , or/and right atrial enlargement ,atrioventricular block , especially , R< 1.0 mv with polymorphic , frustration in lead V1 should besuspected of having Ebstein's anamoly of the tricuspid valve. The incidence rate of right atrial en-largement is increased with the large heart and lower arterial oxygen saturated concentration,then the incidence rate of R<1.0 mv in lead V1 is raised with age and reduced with arterial oxy-gen saturated concentration.