Relationship between the ablation index, lesion formation, and incidence of steam pops
Relationship between the ablation index, lesion formation, and incidence of steam pops
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DOI：
10.1002/joa3.12195
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发表时间：
2019-08-01
影响因子：
2
通讯作者：
Matsumoto, Kazuo
中科院分区：
文献类型：
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作者：
Mori, Hitoshi;Kato, Ritsushi;Matsumoto, Kazuo
背景消融指数(AI)被报道为持久肺静脉隔离(PVI)的有用指标。然而，目前还没有关于功率、接触力(Cf)、AI和蒸汽爆裂之间关系的研究。方法采用体外消融模型，将消融能量输送至蒸汽爆裂发生，并测量蒸汽爆裂发生的时间和AI。实验在不同功率(20、30、40和50W)和接触力(CFS)(10、30和50g)的组合下进行，每种设置20次。这项分析包括两个方案。第一个方案是在相同的CF(10、30和50g)下比较消融功率和几个参数。第二个方案是在相同功率(20、30、40和50 W)下将CF与几个参数进行比较。评价病变形成与消融参数的相关性。结果在不同的消融设置下，发生蒸汽爆裂时的AI值不同。所有AI中值均为
Background The ablation index (AI) is reported to be useful for a durable pulmonary vein isolation (PVI). However, there have been no studies investigating the relationship between the power, contact force (CF), AI, and steam pops. Methods Using an in vitro model, ablation energy was delivered until a steam pop occurred and the time to the steam pop and AI when the steam pop occurred were measured. The experiment was performed with a combination of various powers (20, 30, 40, and 50 W) and contact forces (CFs) (10, 30, and 50 g) 20 times for each setting. The analysis consisted of two protocols. The first protocol was a comparison between the ablation power and several parameters under the same CF (10, 30, and 50 g). The second protocol was a comparison between the CF and several parameters under the same power (20, 30, 40, and 50 W). The correlation between the lesion formation and ablation parameters was evaluated. Results The AI value when steam pops occurred varied depending on the ablation settings. All AI median values were