Maybe it was some kind of nurse practitioner who has more authority than the usual nurse. She still should have introduced herself, made you aware of her qualifications, and made sure you were okay with going ahead, before she proceeded. Poor communication, at the very least. There may or may not have been a medical problem, but there was definitely a communication problem. It's really not hard to take care of that in the first 60 seconds of the appointment.
As far as changing doctors, have you ever even met this cardiologist? If so, then you either like him or you don't. If not, then maybe you should at least meet with him for an appointment and give him a chance. If you do change cardiologists, then yes, another cardiologist should be able to review the report of this stress test and use the results.
Usually, a doctor is on site to be available if the stress test causes an adverse medical problem. And there is a tech that conducts the test and together with the doctor they view an EKG reading as the test progresses. That has been my experience.
A nuclear stress test measures blood flow to your heart muscle both at rest and during stress on the heart. It's performed similar to a routine exercise stress test, but provides images that can show areas of low blood flow through the heart and areas of damaged heart muscle.
A nuclear stress test usually involves taking two sets of images of your heart — one set during an exercise stress test while you're exercising on a treadmill or stationary bike, or with medication that stresses your heart, and another while you're at rest. A nuclear stress test is used to gather information about how well your heart works during physical activity and at rest.
I ask and receive a written report of the reuslts a week or so later. The cardiologist reviews the results and dictates the results for a written report for the chart.