Abstract:

Objective To explore the changes of electrocardiogram (ECG) of the arrhythmic right ventricular dysplasia (ARVD). Methods The effects of the development of ARVD on ECG were analyzed by comparing ECGs of 2002 and 2011 with color ultrasonography of a patient with ARVD. Results With the increase of internal diameter of right ventricle and pulmonary arterial pressure, the QRS interval prolonged gradually; the end of QRS became slurring and notching; V1 lead showed ε wave; the degree of T wave inversion became serious from V1 to V4 leads; and the T waves of Ⅱ, Ⅲ and aVF leads also inversed. The patient showed multifocal ventricular tachycardia. Conclusion The QRS interval may not prolong at the early stage of ARVD, but with the development of the disease, it will prolong gradually and T waves of Ⅱ, Ⅲ and aVF leads may inverse. The multifocal ventricular tachycardia may accompany ARVD.

Key words: arrhythmic right ventricular dysplasia, multifocal ventricular tachycardia, electrocardiographic manifestations