The lesion characteristics assessed by LGE‐MRI after the cryoballoon ablation and conventional radiofrequency ablation

Autor: Jun Kurose, Kunihiko Kiuchi, Koji Fukuzawa, Shumpei Mori, Hirotoshi Ichibori, Hiroki Konishi, Yayoi Taniguchi, Kiyohiro Hyogo, Hiroshi Imada, Hideya Suehiro, Yu‐ichi Nagamatsu, Tomomi Akita, Makoto Takemoto, Ken‐ichi Hirata, Shinsuke Shimoyama, Yoshiaki Watanabe, Tatsuya Nishii, Noriyuki Negi, Katsusuke Kyotani
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Journal of Arrhythmia, Vol 34, Iss 2, Pp 158-166 (2018)
Druh dokumentu: article
ISSN: 1883-2148
1880-4276
DOI: 10.1002/joa3.12025
Popis: Abstract Background Rhythm outcomes after the pulmonary vein isolation (PVI) using the cryoballoon (CB) are reported to be excellent. However, the lesions after CB ablation have not been well discussed. We sought to characterize and compare the lesion formation after CB ablation with that after radiofrequency (RF) ablation. Methods A total of 42 consecutive patients who underwent PVI were enrolled (29 in the CB group and 13 in the RF group). The PVI lesions 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. Results As compared to the RF group, 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 CB group (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). Conclusions The PVI lesions after CB ablation were characterized by extremely wider and more continuous lesions than those after RF ablation.
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