I’ve had several episodes of “syncope” or fainting since last spring, and my doctor has referred me to a cardiologist for a workup. Yesterday, I had an echocardiogram, tomorrow I’m having a nuclear stress test (I think with medication so I won’t be on the treadmill). Thursday, I’m having a halter monitor placed for 24 hours. I’m hoping that the “spells” are vasovagal response and not a cardiac problem. I’ve had a slight murmur since I had staph infection many years ago and was really sick. I think I’m worried more about the stress test and the effects of the medication that is used, not the radioactive isotopes, but the medication that puts the stress on the body. Has anyone ever had the test? Don’t know if I’ll get an answer tonight, but thought I’d try. Thanks.