Outcomes of Transradial PCI compared to Transfemoral PCI in veterans with anemia: Insight from the VA Clinical Assessment, Reporting and Tracking (CART) program.

BACKGROUND:Pre-procedural anemia is associated with increased bleeding and mortality post-percutaneous coronary intervention (PCI). The effect of trans-radial PCI (TR-PCI) in improving outcomes compared to trans-femoral PCI (TF-PCI) in anemic patients is not known. OBJECTIVE:The aim of this study was to evaluate the association between arterial access site (radial versus femoral) and outcomes in anemic Veterans undergoing PCI. METHODS:Patients with baseline anemia, undergoing PCI at Veterans Affairs (VA) facilities between 2009 and 2015, were divided into two groups based on primary radial or femoral access. The association between anemia and access site with in-hospital and one-year adverse outcomes was evaluated using multivariable analysis. RESULTS:7330 veterans were included in the analysis, with 1712 (23%) treated via radial access. Baseline anemia was independently associated with in-hospital major bleeding (OR 3.8, 95% CI 2.5-5.6 for moderate anemia, OR 18.6, 95% CI 11.6-29.7 for severe anemia), and in-hospital mortality (OR 3.2, 95% CI 1.8-5.8 for moderate anemia, OR 7.9, 95% CI 3.7-16.8 for severe anemia). Anemia was also associated with increased one-year MACE and mortality. PCI performed via radial access was not associated with different outcomes compared with femoral access in the presence of anemia. Comparable results were noted when analysis was restricted to only patients with acute coronary syndrome (ACS). CONCLUSIONS:Moderate and severe anemia were strongly associated with increased in-hospital and one-year mortality in a large healthcare system, though there was no interaction between arterial access site for PCI and clinical outcomes among patients with moderate or severe anemia.