I have a pacemaker now. my heart doctors want to do another surgery. my heart is still going to fast are to slow. what other surgerys would they do.

Av node ablation: You might have atrial fibrillation with a rapid ventricular heart rate. The pacemaker can support your heart when it is slow but will not be helpful for a fast heart rate. In this case the doctor will go in and ablate or cut the atrial ventricular node and allow the pacemaker to pace your heart at a regular slower rate Alternately if is a flutter or paroxysmal atrial tachycardia then ablate