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Comprehensive Overview of Retrograde-Antegrade Connection Techniques Without Externalization in Chronic Total Occlusion PCI: The Portal Techniques

C. Ungureanu, A. Avran, ES. Brilakis, K. Mashayekhi, K. Alaswad, P. Agostoni, G. Gasparini, G. Colletti, M. Cocoi, A. Achim, EB. Wu, V. Novotný, M. Kovacic, S. Rathore, A. La Manna, T. Noterdaeme, O. Gach, N. Bozinovic, L. Novelli, G. Leibundgut

. 2025 ; 105 (1) : 11-22. [pub] 20241212

Jazyk angličtina Země Spojené státy americké

Typ dokumentu časopisecké články, přehledy

Perzistentní odkaz   https://www.medvik.cz/link/bmc25010443

BACKGROUND: Advancing the retrograde microcatheter (MC) into the antegrade guide catheter during retrograde chronic total occlusion (CTO) percutaneous coronary intervention (PCI) can be challenging or impossible, preventing guidewire externalization. OBJECTIVES: To detail and evaluate all the techniques focused on wiring to achieve intubation of the distal tip of a microcatheter, balloon, or stent with an antegrade or retrograde guidewire, aiming to reduce complications by minimizing tension on fragile collaterals during externalization and enabling rapid antegrade conversion in various clinical scenarios. METHODS: We describe the two main techniques, tip-in and rendezvous, and their derivatives such a facilitated tip-in, manual MC-tip modification, tip-in the balloon, tip-in the stent, deep dive rendezvous, catch-it and antegrade microcatheter probing. We provide case studies that demonstrate the effectiveness of these techniques in complex scenarios involving extreme vessel angulation, severe calcification, fragile collaterals, and challenging retrograde MC crossing without externalization. CONCLUSION: The development of advanced variants along with traditional techniques to establish retrograde guidewire connection and antegrade conversion has led to the establishment of a cohesive group of methods known as portal techniques. These approaches serve as strategic advantages in retrograde CTO-PCI, providing a valuable and feasible alternative to conventional retrograde connection techniques, particularly when those techniques fail. Their ability to avoid the externalization process reduces potential damage to collateral channels and the ostium of the donor artery, potentially leading to a reduction in complication rates.

Citace poskytuje Crossref.org

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