Echocardiography may be indicated if the patient has any underlying co-existing heart diseases or if the<unk>  bundle<unk>  block is new.
Right bundle branch block echocardiography
Ventricular tachycardia echocardiography
First degree AV block echocardiography
Syncope echocardiography
Third degree AV block echocardiography
Right bundle branch block physical examination
Premature atrial contraction laboratory studies
Cardiomyopathy electrocardiogram