This post from an atrial fibrillation support group:
"I had an ablation at Johns Hopkins this past week and am very upset at the outcome. I haven't had any symptoms but experienced severe shortness of breath. After xrays and tests it was discovered that the phrenic nerve was damaged and I now have parylasis of the right diaphragm. I have a continuous dry cough and such SOB I can't lay down to sleep.