Incidence and Predictors of Early and Late Radial Artery Occlusion after Percutaneous Coronary Intervention and Coronary Angiography: A Systematic Review and Meta-Analysis.

Abstract

<b>Introduction:</b> Trans-radial access for coronary angiography and percutaneous coronary intervention (PCI) has gained popularity due to its advantages over the traditional transfemoral approach. However, radial artery occlusion (RAO) remains a common complication following trans-radial procedures. This study aimed to investigate the incidence of early and late RAO along with their risk factors. <b>Methods:</b> Six databases, Medline (Ovid), National Library of Medicine (MeSH), Cochrane Database of Systematic Reviews (Wiley), Embase, Scopus, and Global Index Medicus, were searched. The systematic review and meta-analysis followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Data were extracted and analyzed. Using a random-effect model, the primary endpoint was the overall incidence of RAO after invasive coronary procedures. Subgroup analysis and meta-regression were also performed to identify possible predictors of RAO. <b>Results:</b> A total of 41 studies with 30,020 patients were included. The overall incidence of RAO was 13% (95% CI = 0.09-0.16). The incidence of early RAO (within 24 h) was 14% (95% CI = 0.10-0.18) in 26 studies, while the incidence of late RAO (after 24 h) was 10% (95% CI = 0.04-0.16) in 22 studies. The average incidence rates of early RAO in studies with catheter sizes of <6 Fr, 6 Fr, and >6 Fr were 9.8%, 9.4%, and 8.8%. The overall effect size of female gender as a predictor was 0.22 with a 95% CI of 0.00-0.44. Age was a potential predictor of early RAO (B = 0.000357; 95% CI = -0.015-0.0027, <i>p</i>: 0.006). <b>Conclusions:</b> This meta-analysis provides essential information on the incidence of early (14%) and late (10%) RAO following angiographic procedures. Additionally, our findings suggest that female sex and age are possible predictors of RAO. A larger catheter, especially (6 Fr) and hemostatic compression time <90 min post-procedure, substantially reduced the incidence of RAO. The use of oral anticoagulation and the appropriate dosage of low-molecular-weight heparin (LMWH) does reduce RAO, but a comparison between them showed no statistical significance.