symptomatic ventricular ectopyfrequent ventricular ectopyasymptomatic ventricular ectopypremature ventricular ectopyatrial and ventricular ectopyisolated ventricular ectopyunifocal ventricular ectopycomplex ventricular ectopyectopy heart rhythmbenign ventricular ectopysupra ventricular ectopyrare ventricular ectopy