Pulmonary vein isolation (PVI) with a cryoballoon usually uses iodinated contrast medium for confirmation of venous occlusion. We hypothesized that an alternative to angiography with iodinated contrast, saline bolus‐enhanced echocardiography with the microbubbles formed in situ, could be used to assess venous occlusion. We sought to assess the efficacy and safety of the contrast‐enhanced intracardiac echocardiographic (ICE) approach.

中文翻译：

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一种盐水对比增强超声心动图引导的冷冻球囊消融方法。

使用冷冻球囊进行肺静脉隔离 (PVI) 通常使用含碘造影剂来确认静脉闭塞。我们假设可以使用碘造影剂血管造影的替代方法，即在原位形成微泡的盐水推注增强超声心动图，可用于评估静脉闭塞。我们试图评估对比增强心内超声心动图 (ICE) 方法的有效性和安全性。