Major findings
First, our study demonstrated that adjunctive EIVOM did not statistically increased the acute success rate of MI ablation. EIVOM significantly reduced the RF application time to complete MI block line; however, the total fluoroscopy tended to be more in the EIVOM group than in the RF group. Second, EIVOM did not reduce AF recurrence or AT compared to the ablation performed by only RF. Third, MI durability was similar between the RF and EIVOM/RF groups.