Barretto A C, Mady C, Ianni B M, Arteaga E, Cardoso R H, da Luz P L, Pileggi F
Instituto do Coração do Hospital das Clínicas, FMUSP, São Paulo.
Arq Bras Cardiol. 1995 Jun;64(6):533-5.
It is well established the association between heart failure and arrhythmias in different cardiopathies. There are no studies in Chagas' myocardiopathy that analyze the relation between arrhythmias and left ventricular function.
We studied 629 patients with Chagas' disease, divided in 3 groups, according to ejection fraction obtained through echocardiographic study (normal, between 0.64 and 0.45, and below 0.44).
At conventional ECG, the presence of ventricular arrhythmias was respectively in the 3 groups: 15%, 36% and 64%, showing higher incidence when left ventricular function was getting worse.
Ventricular arrhythmias in Chagas' disease are frequent in patients with normal ejection fraction, and become more intense as ventricular dysfunction progresses.
心力衰竭与不同心脏病中的心律失常之间的关联已得到充分证实。在恰加斯心肌病中，尚无研究分析心律失常与左心室功能之间的关系。
我们研究了629例恰加斯病患者，根据经超声心动图检查获得的射血分数（正常、在0.64至0.45之间以及低于0.44）将其分为3组。
在常规心电图检查中，3组患者室性心律失常的发生率分别为15%、36%和64%，表明随着左心室功能变差，发生率更高。
恰加斯病患者中，射血分数正常的患者室性心律失常很常见，并且随着心室功能障碍的进展而变得更严重。
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