We describe the unique phenomenon of occlusive venogram-induced suppression of premature ventricular complexes (PVC) arising from the epicardial left ventricular summit (LVS). Prior to ablation through the coronary sinus, routine occlusive venogram performed at the focus of PVC origin led to localized myocardial staining and simultaneous, sustained PVC suppression. Pace-mapping adjacent to the area of myocardial staining revealed near-identical PVC morphology match (98%). Routine occlusive venogram prior to ablation within the coronary venous system is safe and contributed to localization of the PVC focus.

中文翻译：

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闭塞性静脉造影对心外膜左室顶峰室性早搏的急性抑制

我们描述了由心外膜左心室峰 (LVS) 引起的闭塞性静脉造影诱导的室性早搏 (PVC) 抑制的独特现象。在通过冠状窦消融之前，在 PVC 起源的病灶处进行的常规闭塞静脉造影导致局部心肌染色和同时持续的 PVC 抑制。与心肌染色区域相邻的起搏映射显示出几乎相同的 PVC 形态匹配 (98%)。在冠状静脉系统内消融之前进行常规闭塞静脉造影是安全的，并且有助于定位 PVC 病灶。