Hi All - has anyone suffered from AF following coronary bypass surgery? My dad had a quadruple bypass recently and although he has been told that the operation was a success he is now suffering from AF. They have tried to shock his heart to restore a rhythm but that didn’t work and are now trying to manage the condition with medication. He has been on the medication for nearly 4 weeks now and it doesn’t appear to be helping. He has no energy and is short of breath all the time. Has anyone else had this problem and can give us an insight as to how long he may feel like this.