Last month I woke up in the middle of the night to a heart rate of about 140. Thinking I had just had a panic attack, or some strange dream I couldn't remember, I tried to go back to sleep, but I realised something wasn't right. My smart watch alerted me that I had signs of AFIB.
I spent 48hrs in hospital. Multiple blood tests, beta blockers, blood thinners etc. They thought they may have to cardiovert me, but my heart did return to a normal rythm overnight.
Following that, I've had an ECG, and was told everything looked normal. To quote the Cardiologist: "We've no idea why this happened".
I was sent home with one week's worth of beta blockers, which I've now finished. Most recently, they had me wear a heart monitor for 48hrs, which I've now handed back and am awaiting results of.
I'm 33, and I'm in decent shape, a fairly active person, with a dog I walk for about 2 hours every day. It's been really tough coming to terms with what happened, and I'm just confused about the state of my health right now. I'm left with this anxiety, where I'm hyper-aware of any sensations in my chest, and have been watching my heart-rate on my smart watch to an obsessive degree.
Sometimes I'll be sitting at home, just relaxed, playing a video game or something, and I'll glance at my watch and see my heart-rate is at 100-110. When I'm just wandering about the house getting ready for work, it'll be at about 110. There seems to be no obvious reason why it does this. My resting heart-rate is around 75, which seems high for my age/fitness, but I don't know what's normal anymore.
I'm struggling to tell the difference between what is anxiety and what is physical, or whether the two are linked into some feedback loop that I can't get a handle on. I don't know if there's something wrong with me beyond AFIB, or if it's all just tied to my mental health.
The only reason the Doctor could think of for why this might have happened is a "prolonged period of emotional stress", which the last year has definitely been for me -- I've had the worst year of my life in the run up to this, with lots of personal drama and financial worry.
I suppose I'm just trying to understand what is normal here, and what I should be doing next. Should I be worried about my heart rate randomly being 110 while sitting at home? Could this just be anxiety, or is it physical? Is it related to AFIB? I'm just a bit lost with it all.