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Mailing Address: lurildo r. saraiva • Av. Prof. Moraes Rego, SN, Hospital das Clínicas UFPE, Disciplina de Cardiologia, Cidade Universitária 52070-420 Recife, PE, Brazil E-mail: lurildocleano@hotmail.com, lurildo@cardiol.br Manuscript received November 15, 2005; revised manuscript received November 21, 2005; accepted November 21, 2005. Male, 34-years-old, developed a rapidly progressive heart failure four years ago, resulting from a left ventricular (LV) noncompaction cardiomyopathy according to findings from magnetic resonance angiography. The initial electrocardiogram (Fig. 1) showed a first-degree AV block, left ventricular and left atrial overload and left bundle branch block, with SÂT at +30°, and biphasic T waves in D1 and V6. Recently, after a viral infection of the respiratory tract he presented with a severe exertional limitation. Doppler echocardiogram (Fig. 2) demonstrated diffuse hypokinesia and a significant decrease in LV ejection fraction (0.38) with mild mitral regurgitation, final LV diastolic diameter of 6.3cm and final systolic diameter of 5.1 cm, in addition to detecting the characteristic trabeculations in the internal face of the septal-apical myocardium with

Aspecto evolutivo da repolarização ventricular em bloqueio de ramo esquerdo no miocárdio não-compactado