Hi Bio,
Sorry you have one more thing to be concerned about. Was it a cardiologist who did your testing? What the EKG machine prints out and how it gets interpreted by a physician are sometimes different things and sometimes require collabortive tests.
Cardiomyopathy has several causes, just one of them being hypertension. I'd be sure it isn't caused by something else (hopefully reversible) before consigning it to the CRPS file. Though CRPS can have cardiac effects it's always good to rule-out other reasons.
Be safe and take care of you, okay?