I have A Fib. I had a cardiac ablation. The procedure should have taken 4 hours. It took my Dr. 7 and 1/2 hours and he told me he could only do 3, as one part was too close to my wind pipe and he did not want to chance nicking it. I am currently taking Metoprolol, Tikosin, and Digoxin. I am experiencing A Fib off and on, dizziness, tingling in my left thumb and forefinger, and occasional heartburn. What could be causing these symptoms?