DEAR DR. ROACH: I was diagnosed with atrial fibrillation in January 2012. I am aware of when it comes by how I feel — a little out of sorts, but no shortness of breath, chest pain or light-headedness.

Aside from patient factors, a number of factors may influence the immediate success of cardioversion, that is, a complete failure to cardiovert. These include electrode placement, shock polarity, ...

Dear Dr. Roach: I was diagnosed with atrial fibrillation in January 2012. I am aware of when it comes by how I feel — a little out of sorts, but no shortness of breath, chest pain or light-headedness.