As weird or scary as an episode may feel, AFib by itself usually isn't deadly. Some episodes of AFib can come and go on their own. Others may need treatment to get your heart back to a normal rate and rhythm. Sometimes, you may be able to take steps to help ease symptoms or stop an episode when it starts.

How long should an AFib episode last?

paroxysmal atrial fibrillation – episodes come and go, and usually stop within 48 hours without any treatment. persistent atrial fibrillation – each episode lasts for longer than 7 days (or less when it's treated) permanent atrial fibrillation – when it's present all the time.

Can AFib come and go daily?

Paroxysmal fibrillation is when the heart returns to a normal rhythm on its own, or with intervention, within 7 days of its start. People who have this type of AFib may have episodes only a few times a year or their symptoms may occur every day.