Monorail snare technique for retrieval of stretched coil

Abstract

Coil stretching is a recognized complication during cerebral aneurysm embolization. ^{1, 3 – 5} For over a decade, the microsnare has proven effective in retrieving migrated coils. ^{1 – 5} Fiorella et al. unveiled the “Monorail Snare Technique” in 2005, offering a specialized approach to stretched coil recovery. ¹ However, to gain a complete understanding of this technique, more than just textual descriptions are necessary; a thorough, practical demonstration is essential. In our technical video (video 1), we illustrated an episode of coil stretching during aneurysm embolization, where the “Monorail Snare Technique” was successfully employed to retrieve a stretched coil. Our video emphasizes the meticulous preparation and modification of the microsnare, showcasing enhanced steps to mitigate the potential blood backflow triggered by the exclusive use of one-arm hemostasis valve during the “Monorail Snare Technique.” ^{1, 5} This pivotal adjustment substantially lowers the threat of thromboembolic events. We highlighted essential precautions to ensure the procedure's safety and efficacy. ^{4, 5}