Treatment of atrial fibrillation depends on the amount of symptoms the person is having and how persistent the atrial fibrillation is. If a person has significant symptoms, then despite the duration of the atrial fibrillation, it would be reasonable to attempt to maintain normal rhythm with suppressive medical therapy initially and subsequently, potentially with ablation.
The goal of atrial fibrillation is to minimize, rather than eliminate the occurrence of atrial fibrillation as much as possible to a point that is satisfactory to the patient. I am afraid I don't have the answer to your specific question.
Perhaps your MIL should talk with her Cardiologist and revisit other forms of treatment. Also the Dr. should explain the consequences of not treating her problems.
I am so sorry to read of your MIL many problems and she is so lucky to have you advocating for her.
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GERD/Heartburn and Heart/Cardiovascular Disease.
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