I went through HELLP with my son in November of 2010. Prior to my pregnancy I had always had heart palpitations, but I would get them just once in a while. A few months after his birth, after I was off the labetalol and nifedipine I was placed on, my heart palpitations returned, but instead of a few a year it was more like a few a month. So finally last month I saw a doctor about it. He did an EKG which was all normal except for my lack of a p-wave. So then I wore a heart monitor for several weeks and recorded my experiences. It seems I am experiencing inappropriate sinus tachycardia...the p-wave thing I am not so sure about...perhaps a junctional rhythm thing, but I don't have all the answers just yet. Anyways, I had not been connecting the HELLP with the tachycardia episodes until now, but I am thinking they are related. My blood pressure returned to normal completely, and yet I had to start on labetalol again to control the palpitations. The inappropriate sinus tachycardia doesn't seem to be anything terribly serious, fortunately, but I am not sure what it means about my health 10-20 years down the line. As I get more answers, I will let you know just in case it can help anyone with any questions they may have.