Wide QRS complex tachycardia in a patient with wide QRS complex sinus rhythm due to left bundle branch block pattern

摘要

A 58-year-old man with hypertension and half a year ago documented left bundle branch block(LBBB)in his past history presented with progressive dyspnea.A pre-admission echocardiography showed severely depressed systolic left ventricular function[ejection fraction(EF)=27%],diffuse hypokinesis and dilated heart chambers consistent with dilated cardiomyopathy(DCM).