Supra Ventricular Tachycardia
I've never suffered any heart problems until a couple of months ago when i started to get a rapid heartbeat, the first recorded one being 222. I've been on Herceptin for 18 months and my MUGA scans are ok so i don't think that is the cause. It seems to come in clusters, about two weeks after chemo (Taxotere), Herceptin and Zoledronic acid (Zometa) infusion. My onc thought it was the Zoledronic acid and so changed it to Ibandronic acid. I was also put on beta blockers. However, it's two weeks since the last infusions and they are back with a vengeance.
They tend to happen in the early hours when i'm asleep or when i'm resting, eg. on the computer. I have lots of dizzy spells but don't seem to notice the rapid heartbeat when i'm active. Whilst being monitored in hospital, my blood pressure was slightly low and my heart rate dropped to the low forties when i was asleep.
Does anyone have any thoughts on this or have a similar pattern.
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