This study clearly depicts that Anatomic grading systems have historically been poor predictors of patency after endovascular tibial interventions. The Global Vascular Guidelines proposed a new Global Limb Anatomic Staging System (GLASS) to estimate 1-year limb-based patency (LBP). The purpose of this study was to determine whether GLASS predicted LBP of tibial interventions.
We included all patients presenting to our multidisciplinary diabetic foot wound clinic between January 2012 and February 2020 who underwent first-time endovascular tibial revascularization for chronic limb-threatening ischemia. Diagnostic angiograms were reviewed to define the preferred target artery pathway and to assign a GLASS stage to each treated limb. One-year LBP was calculated and compared across GLASS stages using Kaplan-Meier curves with log-rank tests and Cox proportional hazards models. We performed tibial revascularization in 90 limbs. Overall 1-year LBP was 46.8% ± 6.9% and did not differ significantly across GLASS stages. The hazard ratio for failed LBP was 1.52 (95% confidence interval, 0.53-4.40) for GLASS stage 2 and 1.34
Reference link-https://www.jvascsurg.org/article/S0741-5214(20)31966-2/fulltext
