I have "non diagnostic st depression" on a stress test report, what does it mean?

I am 52 year old woman who had a stress test for PVCs (had them for 13 years). I take verapamil (240mg) once a day. I just don’t understand the results. Also, what is ventricular ectopy, does that mean pvc? I don’t think my family doctor knows how to read this report and now has [...] http://bit.ly/qAIovh