Abstract
Data on risk factors and periprocedural complications associated with side branch (SB) occlusion after chronic coronary total occlusion (CTO) recanalization are limited. The aims of this study were to identify independent predictors of side branch (SB) occlusion after chronic total occlusion (CTO) recanalization and assess the relationship between SB occlusion and perioperative complications. 245 patients with CTO bifurcation lesions (BFLs) who underwent successful CTO recanalization were included in the study. In the occlusion group, most of the SB occlusions were observed after the implantation of the stents and lack of SB protection was more common. However, there was no significant between-group difference in the angles between the main vessel (MV) and SB. SB occlusion was associated with a higher risk of periprocedural myocardial infarction and a higher composite periprocedural complication rate. Identified as predictors of SB occlusion were no SB protection, use of a dissection-reentry strategy, ostial SB stenosis, and proximal MV stenosis of 50% or more.
Highlights
Data on risk factors and periprocedural complications associated with side branch (SB) occlusion after chronic coronary total occlusion (CTO) recanalization are limited
After confirming successful CTO recanalization, 245 (36.3%) patients with CTO bifurcation lesions (BFLs) were included in the study
There have been several studies of BFLs involved in the CTO recanalization procedure, they have major limitations
Summary
Data on risk factors and periprocedural complications associated with side branch (SB) occlusion after chronic coronary total occlusion (CTO) recanalization are limited. The aims of this study were to identify independent predictors of side branch (SB) occlusion after chronic total occlusion (CTO) recanalization and assess the relationship between SB occlusion and perioperative complications. The incidence of side branch (SB) occlusion occurs in 4.5–26% in non-occluded coronary arteries when performing percutaneous coronary intervention (PCI) and associated with a higher risk of periprocedural myocardial infarction (PMI)[1,2,3,4]. The aims of this study were to identify risk factors for SB occlusion, examine the SB protection strategy and assess the relationship between SB occlusion and perioperative complications
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