I am a 45 yo female. History of anxiety/panic attacks. In February 2006 I went to the ER with SOB and chest pain. I remember the term IST after my EKG. The cardiologist admitted me. Over the next three days I had blood work, Echo, thallium stress test, monitoring, and a catheterization. I was told it was anxiety, had exercise intolerance and needed to lose weight (I weighed 175 at that time). I have since lost 45-50 pounds, but still do not exercise.
I always had normal bp (120/80). After losing weight, I noticed it was more likely to be 115/75. I was diagnosed with Hashimoto's last October and am on Synthroid .50 mg. When I went to the endo my bp was 121/92, and each subsequent time at his office my diastolic would be in the low 90's.
I purchased a home bp monitor in order to keep track in case there was a problem. (I got an Omron model.) I was surprised to find that my bp at home was actually low, usually in the 90's/60's. The lowest I've ever had it read was 81/55. But, at the doctor's office it would be high, 130/90. I saw the cardiologist again 2-3 months ago to run this by him and he did an EKG and said he'd see me in 6 months. He feels that I have either an auto-immune or endocrine problem that is causing my symptoms (bp fluctuations, Raynaud's, skin flushing). I had extensive blood work done at the rheumatologist which did not indicate any other auto-immune disease other than the Hashimoto's and Raynaud's.
Is the fluctuation in bp concerning? I do sometimes feel lightheaded (mostly when seated). Could this be a form of dysautonomia? My cardiologist indicated that was a possibility but didn't offer testing.
Lastly, my bp monitor sometimes gives me the "irregular heartbeat" symbol. This occurs when I sitt down and take my bp without waiting the 15-30 minutes the instructions say. If I then sit quietly and then retake it is normal. Anxiety does cause my pulse rate to fluctuate a lot as well.