4 | DISCUSSION
Our main findings are:
  1. VOM-EI was feasible in 19 of 22 patients (86%) without major adverse events.
  2. VOM-EI with ancillary radiofrequency ablation as necessary achieved mitral isthmus block in all patients.
  3. The volume of ethanol injected into the VOM correlated with the area of scarring in the voltage map.