Efficiency and Durability of EIVOM on Acute Reconnection After Mitral Isthmus Bidirectional Block

Zuo, S; Sang, C; Long, D; Bo, X; Lai, Y; Guo, Q; Wang, Y; Li, M; He, L; Zhao, X; Guo, X; Liu, N; Li, S; Wang, W; Jiang, C; Tang, R; Du, X; Dong, J; Ma, C

doi:10.1016/j.jacep.2023.11.027

Arrhythmias & electrophysiology

Efficiency and Durability of EIVOM on Acute Reconnection After Mitral Isthmus Bidirectional Block

JACC Clin ElectrophysiolPublished April 2024Randomised controlled trial

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Authors' conclusion

EIVOM can reduce acute reconnection after MI bidirectional block and significantly increase first-pass MI block.

Study context

Population: Patients with persistent AF scheduled for first radiofrequency ablation
Participants: 89 patients

Comparison: EIVOM plus radiofrequency catheter ablation (RFCA) vs RFCA alone
RFCAn = 44reference
EIVOMn = 45
Primary endpoint: Acute reconnection after mitral isthmus bidirectional block
Follow-up: 30 minutes after MI bidirectional block

Primary result

As reported in the abstract

EIVOM6.7%3 of 45

RFCA35.1%13

P < 0.05

Further findings

Mitral isthmus bidirectional block before observation

RFCA84.1%

EIVOM100%

Final mitral isthmus block after additional ablation

RFCA72.7%

EIVOM97.8%

Recurrent AF · 1 year

P < 0.01

RFCA31.8%

EIVOM17.8%

Original publication

Efficiency and Durability of EIVOM on Acute Reconnection After Mitral Isthmus Bidirectional Block. JACC Clin Electrophysiol. Published April 2024. doi:10.1016/j.jacep.2023.11.027

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