What are the long term problems with atrial fibrillation?

In terms of atrial fibrillation, what sort of problems you can get with it long term? So one of the main problems with atrial fibrillation and the main way in which it poses any threat is that it is Atrial fibrillation The way in which atrial fibrillation poses its greatest threat is that it is the most common cause for unexpected stroke and unfortunately because atrial fibrillation can in some people have no symptoms, the first time they come to medical attention is when they have their stroke and this obviously is a tragic outcome that we need to try and avoid.