I started having episodes of SVT about six months after the dx of CIDP. I have probably had a dozen episodes since. I have had two cardiac ablations in 2007 to “zap” the extra electrical pathway inside the heart that allows the SVT to happen. So, two surgeries later I’m still on Toprol and still having episodes of SVT. During the first episode my heart rate was in the 250’s. I was at work walking, talking, and only had a little fluttery feeling in my chest. I was grateful that I was already inside of a hospital.
Good luck with your test, I hope for the best of results for you.
Peace,
Flower

i started having SVT (supraventricular tachycardia) after about six months of ivig. the first episode i had a heart rate of 250. i felt a little funny, but no major symptoms. ER converted me back chemically and i started on toporol. a few month later a cardiologist did a cardiac ablation to “burn” the extra electrical pathway that lies in the heart when ever you have SVT.
well, two cardiac ablations later i am still having episodes of SVT. i turned 34 last month. before being diagnosed with cidp i have never had a cardiac problem before. weird how everthing sort of happened in a matter of a few months. so, i remain on the toporol and continue to have episodes of SVT. after about 5 ER visits to chemically convert myself, i started to be able to convert myself by doing the valsalva manuver.
not understanding why my body is continuing to do this, nor have any of my doctors been able to give me an explanation.