I was diagnosed with paroxsymal atrial fibrillation in 1989. Currently I take 2 flecanaide tablets a day and 1 ramipril for slightly raised blood pressure. This faintness comes on after standing up and it seems after meals. Is there any link between digestion and heart rhythms? I have asked GPs and consultants over the years. Some say yes and others have looked at me as if I was an idiot. This 'surge' is like a sudden rush.