Can anyone interpret this Holter for me?

Hi,

I am a 33-year-old white male. I have seronegative spondyloarthropathy and take a 90 mg arcoxia pill every other day. (I lowered it about 2 months ago, from taking it for 2 days and then not taking it the 3rd day.)

I've been having arrhythmias for ~ the last 6 months. Initially I thought it was something stomach-related, reflux, whatever. It seemed hard to believe those things I was feeling were the heart. But after a visit to the gastroenterologist, he said my stomach is fine, and told me to check with a pathologist, they could be arrhythmias.

My pathologist, who also happens to be a cardiologist, said I indeed had arrhythmias. But they were the good, non-dangerous kind.

I realized I got lucky, cos I was having those thumps while he was examining me. I had gone to him in the past and he had found nothing, said everything looks perfect, and that was part of the reason I thought it was stomach-related. Only later did I understand that he can only see I have a problem if it happens while he's examining me. I thought somehow the tools could detect something was wrong even when it wasn't happening.

X-rays and CT scan showed nothing wrong with my heart.

But I keep getting worse. I went from occasionally having these about 6 months ago, to having them every time I ate and went to bed, to now having them all day long. Yesterday I was lifting weights (standing leg exercise, not chest-related) and I took my pulse and my heart was beating at like 240 beats per minute (4 per second). I'm not sure cos I didn't measure it properly, but it was very extraordinary.

When I go to sleep at night it's the worst. My heart does whatever it wants. It can skip every third beat, it can thump powerfully like a drum, it can go back to being completely calm and barely noticeable and kinda weak, etc.

I was strapped with a Holter monitor for a day, and it showed ~ 8000 supraventricular events. From what I read online, that's quite a lot. My cardiologist says it's fine. He says they're the good kind! He always says everything is fine!

I now realize I had arrhythmias many years ago as well, and had panic attacks at the time, I always thought there's something wrong with my heart, but everyone said those were the symptoms of panic attacks. After about 6 months (and benzodiazepines) they were gone, and then I felt those things maybe once every two years for a few weeks and they went away by themselves. Only now do I realize what they were, I always thought they were gastro-related, IBS maybe or whatnot.

Anyway, my doctor tends to say everything's fine, but I'm worried, these feelings I get in my heart don't seem like 'fine' to me. He started me on a magnesium vitamin complex about a week ago, and he'll move me on to beta blockers in about a week. The magnesium didn't do anything so far. As I knew it wouldn't, since I eat a very healthy and varied diet.

So I thought I'd give people here my Holter summary, and maybe someone can offer another opinion, whether they think the findings are within the normal range.

Is there a way to know, subjectively, when the arrhythmias are getting dangerous? I'm thinking of consulting a second cardiologist, but I'm strapped for cash so I'm asking here first.

Since my heartbeats appear rather weak sometimes, won't the beta blockers make that worse?

I also feel the occasional sharp pain, fluttering, and all that, in case anyone's wondering.

Thanks

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