The impact of travel distance in patient outcomes following revascularization for chronic limb-threatening ischemia

Abstract

Background

Patient travel distance to the hospital is a key metric of individual and social disadvantage and its impact on the management and outcomes following intervention for chronic limb-threatening ischemia (CLTI) is likely underestimated. We sought to evaluate the effect of travel distance on outcomes in patients undergoing first-time lower extremity revascularization at our institution.

Methods

We retrospectively reviewed all consecutive patients undergoing first-time lower extremity revascularization, both endovascular and open, for CLTI from 2005 to 2014. Patients were stratified into 2 groups based on travel distance from home to hospital greater than or less than 30 miles. Outcomes included reintervention, major amputation, restenosis, primary patency, wound healing, length of stay, length of follow-up and mortality. Kaplan-Meier estimates were used to determine event rates. Logistic and cox regression was used to evaluate for an independent association between travel distance and these outcomes.

Results

Of the 1293 patients were identified, 38% traveled >30 miles. Patients with longer travel distances were younger (70 years vs 73 years; P = .001), more likely to undergo open revascularization (65% vs 41%; P < .001), and had similar Wound, Ischemia, foot Infection stages (P = .404). Longer distance travelled was associated with an increase in total hospital length of stay (9.6 days vs 8.6 days; P = .031) and shorter total duration of postoperative follow-up (2.1 years vs 3.0 years; P = .001). At 5 years, there was no definitive difference in the rate of restenosis (hzard ratio [HR], 1.3; 95% confidence interval [CI], 0.91-1.9; P = .155) or reintervention (HR, 1.4; 95% CI, 0.96-2.1; P = .065), but longer travel distance was associated with an increased rate of major amputation (HR, 2.1; 95% CI, 1.2-3.7; P = .011), and death (HR, 1.6; 95% CI, 1.2-2.2; P = .002). Longer travel distance was also associated with higher rate of nonhealing wounds (HR, 2.3; 95% CI, 1.5-3.5; P = .001).

Conclusions

Longer patient travel distance was found to be associated with a lower likelihood of limb salvage and survival in patients undergoing first-time lower extremity revascularization for CLTI. Understanding and addressing the barriers to discharge, need for multidisciplinary follow-up, and appropriate postoperative wound care management will be key in improving outcomes at tertiary care regional specialty centers.