I am am an RN with 33 years of experience. The last 20 years I have worked in nursing manangement. So---I need the expertise of some cardiac nurses. During a routine office visit for hypertension follow up I had an irregular heart rate. Rhythm strip showed PVC's. I was refered to a cardiologist. 24 hour Holter-normal (few PVC's) ECHO--normal I am now scheduled for a persantine myoview. My question is---What are the possble dangers of a persantine myoview? Thanks in advance