Echocardiography is an available and helpful modality for diagnosis and predicting the underlying causes of<unk><unk>  and sudden cardiac arrest. Findings on an echocardiography include  assessment of myocardial function, valvular structural and functional disease, congenital heart disease, cardiomyopathy, heart failure, prior MI.
Ventricular tachycardia echocardiography
Atrial flutter echocardiography
Right bundle branch block echocardiography
First degree AV block echocardiography
Cardiomyopathy electrocardiogram
Syncope echocardiography
AVNRT physical examination
Third degree AV block echocardiography