Mahajan Ankit, Narasimhan Calambur, Vijayaraman Pugazhendhi
Geisinger Heart Institute, Wilkes Barre, PA, USA.
AIG Hospitals, Hyderabad, India.
Indian Pacing Electrophysiol J. 2023 Sep-Oct;23(5):163-165. doi: 10.1016/j.ipej.2023.06.003. Epub 2023 Jun 17.
Ablation using non-irrigated catheter can lead to rapid rise in temperature of electrode tissue interface from tissue desiccation, steam and coagulum formation and this may limit power delivery and lesion size. We present a novel technique of external irrigation through the long sheath while using a non-irrigated ablation catheter during AV Node ablation and conduction system pacing. By bringing the long sheath closer to the tip of non-irrigated catheter and injecting cold normal saline allows cooling of electrode tissue interface leading to increase in power delivery resulting in a deeper lesion.
使用非灌注导管进行消融会因组织干燥、蒸汽和凝块形成而导致电极与组织界面温度迅速升高，这可能会限制能量输送和损伤大小。我们提出了一种在房室结消融和传导系统起搏期间，通过长鞘进行外部灌注，同时使用非灌注消融导管的新技术。通过将长鞘靠近非灌注导管尖端并注入冷生理盐水，可以冷却电极与组织界面，从而增加能量输送，形成更深的损伤。
