Using Vascular Deserts as a Guide for Limb Preservation Outreach Programs Successfully Targets Underserved Populations.

ABSTRACT

OBJECTIVES: Vascular deserts, regions without vascular providers, previously described targets for limb salvage efforts. The CHAMPIONS programs targeted regions for outreach and evaluated the population using desert maps. METHODS: At two events targeting underserved regions between 2022-2023, providers screened and educated participants on peripheral arterial and cardiovascular disease. Demographics and cardiovascular risk factors were collected. Using ArcGIS, vascular surgeons, and VQI participating facilities were mapped with a 30-mile buffer. Participants were mapped with census data, and the Healthy Places Index (HPI) was overlayed for population and social determinants of health data analysis in Medical Service Study Areas (MSSA), a geographical analysis unit. (Figure 1) Results were compared to prior statewide deserts. RESULTS: Outreach program participants' mean age was 56 (range 6-88); 39% were male, and the majority were Hispanic (86%). 27% had no primary care provider. 30% had diabetes, 10% undiagnosed before the event, 38% had hypertension, 40% undiagnosed prior to the event, and 21% described intermittent claudication. 81% made <$30,000 annually, and 28% reported no health insurance. Similarities were observed when comparing program participant demographics to the population-level data from the targeted regions. Patients were more frequently Hispanic than other desert regions (68% vs. 36%, p<.001). Compared to other vascular desert regions, the target population was more disadvantaged in all HPI domains, including economic (18 vs. 38%, p<.001), education (21 vs. 39%, p<.001), and transportation (30 vs. 40%, p<.001). Worse education, financial, and transportation resources correspond to decreased care access due to poor literacy and travel burdens. CONCLUSIONS: CHAMPIONS programs successfully targeted populations needing care based on vascular care desert maps, demonstrating that at-risk populations can be successfully identified and screened for cardiovascular disease.