[Physiopathology and methods of clinical evaluation of ventricular extrasystoles].

The severity of ventricular asystole depends on many parameters involving above all the physiopathological mechanism behind the extrasystole; re-entry; normal, exaggerated or abnormal cardiac automatism, and thus the possible presence of underlying cardiopathy. In addition, the morphology, number and characteristic features of the arrhythmia are directly related to prognosis. Different further investigations: 24-hour Holter monitoring, exercise testing and electrophysiological investigation are often required to assess prognosis.