The risk of ventricular arrhythmias may recently be analyzed by late ventricular potentials (LVP). The presented paper reviews the pathophysiology of LVP. The author describes some methodological and technical problems of LVP registration and examination in clinical practice. The main aim of the paper is to bring some information on clinical usefulness of LVP. The situations, when the examination of LVP is accepted diagnostic method is presented. The author concludes, that examination of LVP is highly informative, non-invasive, economically acceptable and available from clinical practical point of view. It is helpful for stratification of cardiological patients who need more intensive diagnostics and therapy.