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

ABSTRACT:

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, t

SUBMITTER: Ungureanu C 

PROVIDER: S-EPMC11694543 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature