The University of Arizona College of Medicine, Phoenix, Arizona.
Emory Heart and Vascular Center, Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA.
Cardiovasc Revasc Med. 2023 Aug;53S:S296-S297. doi: 10.1016/j.carrev.2022.08.031. Epub 2022 Aug 26.
"Tip-in" technique used in chronic total occlusion revascularization can sometimes be challenging. Herein, we describe a novel method to facilitate "tip-in". After retrograde lesion crossing, the retrograde wire is advanced in a stepwise fashion into the antegrade guide catheter, the guide extension catheter and finally into the antegrade microcatheter. The use of a small lumen guide extension catheter to facilitate "tip-in" works by decreasing the area of operation, hence maximizing the chances of the wire and microcatheter meeting in the same plane. Overall, this newly described "double tip-in" technique can increase procedural success and decrease procedural time.
“Tip-in”技术在慢性完全闭塞血运重建中有时具有挑战性。在此，我们描述了一种促进“Tip-in”的新方法。在逆行病变穿越后，逆行导丝逐步进入正向引导导管、导引导管延长导管，最后进入正向微导管。使用小内腔导引导管延长导管来促进“Tip-in”的作用是减小操作面积，从而最大化导丝和微导管在同一平面相遇的机会。总体而言，这种新描述的“双 Tip-in”技术可以提高手术成功率并缩短手术时间。
