That's the problem. The docs didn't explain anything except to say it wasn't a heart attack. T-wave inversion is new to the ekg. I do have an appointment with my cardiologist next week.
I don't know what these mean without comparing it to a prior EKG, given that with your heart history your EKG is unlikely to be normal. So if the t wave inversions are new they could be consistent with new anterior ischemia, but if they are inverted on your EKG at baseline this may be unrelated. What did the ER physicians think, or how did they explain this to you?