Monorail snare technique for retrieval of stretched coil.

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}.