Circulating monocyte phenotypes following lower extremity endovascular revascularization. A, Classic monocytes, identified by expression of CD14 only (CD14+/CD16−), remained stable over time. Pro-inflammatory monocytes, identified by co-expression of CD14 and CD16, also remained stable over time, although the presence of this subtype appeared to demonstrate a downward trend following revascularization. B–C, Integrin surface expression (CD18, CD11a, and CD11b) was similar between the two monocyte phenotypes. CD14+/CD16− cells demonstrated a greater percentage of HLA DR+ cells across all time points compared to CD14+/CD16+ cells (p=.021).