Hello Doctor, In February of this year I had a catheter ablation for atrial fibrillation. As a result, I had damage to my phrenic nerve and had breathing difficulties, mostly at night. The doctor assured me that it would get better over time. I thought it was better, but lately I seem to have slipped back and continue with the sleep problems. I get short of breath when walking too much and at night when I try to sleep. I have an appointment with a pulmonologist in November, but in the meantime, I have no energy and feel terrible a good part of the time. I m not sure where to go from here and the electro-physiologist has not been helpful in getting me to after care for this problem. I m at a loss. Hope you can help me.