Is there a connection to seizures and artrial fibrillation? My husband has had 2 seizures within the past 4 years with no diagnosis after multiples tests for the cause. He recently had his first episode of atrial fibrillation , which landed him in the ER and an overnight stay in the hospital when the medications they gave him were not helping. The medications eventually helped after several hours and he was basically given a discharge with no restrictions written on the discharge papers. I am wondering if there is a connection to the seizures of unknown cause and this recent atrial fibrillation.