I'm aware I should ask my GP this, and will, but thought I'd ask if anybody here has experienced this with not so frequent paroxysmal AF. When I was first diagnosed with this in 2012 I went for an echo that showed no heart abnormalities. Since then I have had AF episodes twice, maybe three times a year, each one very mild (lowish heart rate) and lasting anywhere between 6 and 18 hours. I am concerned about the left atrium becoming enlarged due to AF but do not know how bad the AF must be to cause this. Should one go for an echo every few years or so to check on this or would it show up through symptoms? Has anybody here with paroxysmal AF found that their left atrium has become enlarged because of their AF and how did you find out that had happened? Maybe I'm overthinking this but the more info one has to hand the better one is prepared to consider what action to take next.