Hi, I had a nasty 8 hour AF episode this week. It affects me badly - chest pain, nausea, dizziness, weakness - and I can hardly move. At first I thought it was fairly mild, pulse up to 140, but later it really kicked in, pulse up to 220. At that point I'd had enough and was scared and for the first time ever with AF, I went to my local hospital. They called an ambulance and I was transferred to the nearest A & E where I stayed for a few more hours, until finally spontaneously going back into sinus rhythm. After the initial aspirin and GTN spray (which did help) all they did was monitor, give a saline drip and keep looking at whether to give me Bisoprolol or not. The AF resolved before I was given the beta blocker. My question to them was - am I wasting your time, should I have come in or not? . . . and their answer was that I should be in hospital with a raised heart rate. But they didn't specify how raised. So my question is: at what point in terms of symptoms or heart rate, do people call 999 and/or get to A&E? When is it ok just to ride it out at home? I don't want to call 999 unnecessarily, but I don't want to be stupidly heroic about it. Do people have their own measure for when to call for help and when to do nothing and wait for it to pass?