[Ventricular tachycardia : Treatment and prognostic significance].

Dilative cardiomyopathy (DCM) has an incidence of 5-8/100,000 inhabitants, and hypertrophic cardiomyopathy an incidence of 1/500 inhabitants. Depending on specific risk factors both conditions have an increased risk for sudden cardiac death (SCD): in DCM reduced left ventricular ejection fraction and reduced physical capacity; and in HCM SCD in family members, left ventricular septum  > 30 mm, unclear syncope, non-sustained ventricular tachycardia (VT) on holter-ECG and inadequate blood pressure response on ergometer. Especially patients with intermediary risk factors are insufficiently classified, and the lifesaving implantation of a cardioverter-defibrillator (ICD) often leads to a significant number of device-related complications. In this area additional methods like late enhancement imaging with cardio MRI, identification of genetic variation and ECG characteristics could help improve risk stratification in these patients.