Hi @svend and welcome to Mayo Clinic Connect. I wanted you to be able to connect with people that have similar questions regarding Afib and blood thinners so you will see that I moved your inquiry to an ongoing discussion that includes several other members. I can tell you that people with prolonged episodes of Afib or frequent episodes, have a much higher risk of heart conditions and/or strokes. So if you have had several, your doctor may want to keep you on them to prevent throwing a clot and having a stroke.
How many episodes have you had since your gall bladder attack?