[Epicardial mapping in the syndrome of premature ventricular excitation. 2].

Epicardial mapping was carried out in 20 patients suffering from Wolff-Parkinson-White's syndrome with supraventricular tachycardias resistant to drug therapy. The automated mapping system elaborated at the A.N. Bakulev Cardiovascular Surgery Institute and a modified method of epicardial mapping made it possible to radically eliminate additional routes of conduction in 91% of cases.