학술논문
The lesion characteristics assessed by LGE‐MRIafter the cryoballoon ablation and conventional radiofrequency ablation
Document Type
Article
Author
Kurose, Jun; Kiuchi, Kunihiko; Fukuzawa, Koji; Mori, Shumpei; Ichibori, Hirotoshi; Konishi, Hiroki; Taniguchi, Yayoi; Hyogo, Kiyohiro; Imada, Hiroshi; Suehiro, Hideya; Nagamatsu, Yu‐ichi; Akita, Tomomi; Takemoto, Makoto; Hirata, Ken‐ichi; Shimoyama, Shinsuke; Watanabe, Yoshiaki; Nishii, Tatsuya; Negi, Noriyuki; Kyotani, Katsusuke
Source
Journal of Arrhythmia; April 2018, Vol. 34 Issue: 2 p158-166, 9p
Subject
Language
ISSN
18804276; 18832148
Abstract
Rhythm outcomes after the pulmonary vein isolation (PVI) using the cryoballoon (CB) are reported to be excellent. However, the lesions after CBablation have not been well discussed. We sought to characterize and compare the lesion formation after CBablation with that after radiofrequency (RF) ablation. A total of 42 consecutive patients who underwent PVIwere enrolled (29 in the CBgroup and 13 in the RFgroup). The PVIlesions were assessed by late gadolinium enhancement magnetic resonance imaging 1–3 months after the PVI. The region around the PVs was divided into eight segments: roof, anterior‐superior, anterior‐carina, anterior‐inferior, bottom, posterior‐inferior, posterior‐carina, and posterior‐superior segment. The lesion width and lesion gap in each segment were compared between the two groups. Lesion gaps were defined as no‐enhancement sites of >4 mm. As compared to the RFgroup, the overall lesion width was significantly wider and lesion gaps significantly fewer at the anterior‐superior segment of the left PV(LAS) and anterior‐inferior segment of the right PV(RAI) in the CBgroup (lesion width: 8.2 ± 2.2 mm vs 5.6 ± 2.0 mm, P = .001; lesion gap at LAS: 7% vs 38%, P= .02; lesion gap at RAI: 7% vs 46%, P= .006). The PVIlesions after CBablation were characterized by extremely wider and more continuous lesions than those after RFablation.