RESUMO
Chronic total occlusions (CTOs) are frequent in patients with previous coronary artery bypass graft (CABG) surgery. Percutaneous coronary intervention (PCI) is the usual revascularization strategy. Whether or not the presence of a graft on a CTO vessel and post-PCI graft patency impacts outcomes after CTO-PCI is unknown. We sought to evaluate the impact of post-PCI graft patency on the durability of CTO-PCI. In total, 259 patients with previous CABG who underwent CTO-PCI in 12 international centers in 2019 to 2023 were categorized into "grafted" and "ungrafted" groups based on the presence of graft on a CTO vessel. The grafted group was subdivided into "graft-occluded" and "graft-patent" groups, depending on graft patency. The primary end points were (1) technical success rate, (2) target vessel failure, and (3) CTO failure rates at 1 year. CTO failure was defined as target vessel revascularization and/or significant in-stent restenosis. A total of 199 patients (77%) were in the grafted group. Grafted CTOs showed higher complexity and lower technical success rates (70% vs 80%, pâ¯=â¯0.004) than nongrafted CTOs. Of the grafted CTOs, 140 (70%) were in the grafted-occluded group and 59 (30%) were in the grafted-patent group. The technical success was lower in the former group (65% vs 81%, pâ¯=â¯0.022). An occluded graft was an independent predictor of technical failure (odds ratio 2.04, 95% confidence interval 1.03 to 4.76, pâ¯=â¯0.049) and persistent post-PCI graft patency was a strong independent predictor of CTO failure at 1 year (hazard ratio 5.6, 95% confidence interval 1.2 to 27.5, log-rank pâ¯=â¯0.033). In conclusion, in patients with previous CABG who underwent CTO-PCI, post-PCI graft patency was a significant predictor of CTO failure.
RESUMO
BACKGROUND: Radial access (RA) and vascular closure devices (VCD) have been shown to be superior to transfemoral access (TFA) with regard to the prevention of vascular complications after percutaneous coronary intervention (PCI). OBJECTIVE: The present study evaluates whether RA is associated with less vascular complications and a lower mortality than VCD. METHODS: A total of 6999 consecutive PCI patients were studied through a single-centre prospective registry from January 2011 to August 2015. RA was applied in 1385 patients (20%), VCDs with Angio-Seal were implanted in 2145 patients (30%) and manual compression of TFA was performed in 3468 patients (50%). RESULTS: RA and VCD patients had comparable baseline risk profiles. The overall vascular complication rate was 2.0% (n = 137) and was composed of false aneurysms (n = 85), clinically relevant haematomas (n = 27), arteriovenous fistulas (n = 12), arterial occlusions (n = 11) and local infections (n = 2). Vascular complications occurred in 0.6% of RA patients, 1.8% of VCD patients and 2.6% of TFA patients (p < .01). In-hospital mortality was 0.8% in RA patients, 0.8% in VCD patients and 3.8% in TFA patients (p < .01). In a multivariate logistic regression model, RA, compared to VCD, was found to be independently associated with a lower rate of vascular complications (OR: 0.34, 95% CI: 0.16-0.75), but not with lower mortality rates (OR: 1.20, 95% CI: 0.51-2.85). CONCLUSION: In this large all-comers PCI population, the radial approach, compared to the femoral approach with VCD use (Angio-Seal), was independently associated with a reduction of vascular complications, but not with lower mortality rates.
