they have gotten much worse and I have had echo scans and holitor monitors.They show regular bi-gems and tr-gems.I have three stents and stress tests and BP are normal.Can the tenormin be exacerbating the ectopics (ventricular) and the mild SVTs I am experiencing.During exercise the ectopics go away.Does this not suggest that the tenormin may be slowing my heart doown too much? Jim Feeney.