Open AccessThe lesion characteristics assessed by LGE ‐ MRI after the cryoballoon ablation and conventional radiofrequency ablation
Author(s) -
Kurose Jun,
Kiuchi Kunihiko,
Fukuzawa Koji,
Mori Shumpei,
Ichibori Hirotoshi,
Konishi Hiroki,
Taniguchi Yayoi,
Hyogo Kiyohiro,
Imada Hiroshi,
Suehiro Hideya,
Nagamatsu Yuichi,
Akita Tomomi,
Takemoto Makoto,
Hirata Kenichi,
Shimoyama Shinsuke,
Watanabe Yoshiaki,
Nishii Tatsuya,
Negi Noriyuki,
Kyotani Katsusuke
Publication year - 2018
Publication title -
journal of arrhythmia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 21
eISSN - 1883-2148
pISSN - 1880-4276
DOI - 10.1002/joa3.12025
Subject(s) - medicine , lesion , ablation , radiofrequency ablation , magnetic resonance imaging , pulmonary vein , nuclear medicine , catheter ablation , radiology , surgery
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 PV s 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.