Abstract

BackgroundAlthough New York's Medicaid expansion increased coverage in 2001, little is known regarding changes in surgical care utilization among patients with vascular disease. We sought to measure the impact of expansion on the rates of both vascular procedures and amputations. Materials and methodsA retrospective analysis was performed using the State Inpatient Databases of New York and Arizona, 1998-2006. Patients aged 18-64 who underwent lower extremity vascular surgery procedures or amputations between 1998 and 2006 were included. Outcomes included rates of total vascular, open vascular, and endovascular procedures, in addition to rates of amputation. A difference-in-difference analysis measured changes in the rates of procedure types, while adjusting for temporal trends in both states. ResultsIn this cohort (n = 112,624), Medicaid expansion was not associated with a change in mortality (odds ratio 0.92, P = 0.5). Expansion was associated with a lower incidence of total vascular procedures (incidence rate ratio [IRR] 0.65, P < 0.001) and open vascular procedures (IRR 0.92, P = 0.002), but a higher incidence of endovascular procedures (IRR 1.13, P < 0.001). There was no change in the rate of amputations (IRR 1.02, P = 0.58). In patients with chronic limb-threatening ischemia (n = 12,668), expansion was associated with a lower incidence of total procedures (IRR 0.59, P < 0.001) and endovascular procedures (IRR 0.59, P < 0.001) but a higher incidence of amputations (IRR 1.43, P = 0.001) and higher odds of mortality (odds ratio 2.21, P = 0.032). ConclusionsAfter Medicaid expansion, the rates of total vascular procedures decreased, with no impact on amputations rates. Furthermore, the utilization of limb-saving procedures in patients with chronic limb-threatening ischemia did not increase.

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