CAN ISOLATED, SYMPTOMATIC, FREQUENT VENTRICULAR PREMATURE DEPOLARIZATIONS BE A PREDICTOR OF AN INDUCIBLE VENTRICULAR-TACHYCARDIA - TREATMENT BY RADIOFREQUENCY CATHETER ABLATION

In this report, we describe a case of sustained ventricular tachycardi a of right ventricular outflow tract origin, induced by dobutamine inf usion in a patient with symptomatic, frequent ventricular premature de polarizations but no documented clinical ventricular tachycardia. Radi ofrequency catheter ablation abolished not only the ventricular tachyc ardia itself, but also the frequent ventricular premature depolarizati ons responsible for all the symptomatology. In conclusion, provocation by catecholamine infusion may have a place in the search for an alter native to antiarrhythmic therapy in patients with isolated, frequent a nd symptomatic ventricular premature depolarizations.