Racial disparities in outcomes for extracorporeal membrane oxygenation in the United States

Abstract

Background: Racial disparities in extracorporeal membrane oxygenation (ECMO) outcomes in patients with a broad set of indications are not well documented.

Methods: Adults requiring ECMO were identified in the 2016-2019 National Inpatient Sample. Patient and hospital characteristics, including mortality, clinical outcomes, and resource utilization were analyzed using multivariable regressions.

Results: Of 43,190 adult ECMO patients, 67.8% were classified as White, 18.1% Black, and 10.4% Hispanic. Although mortality for Whites declined from 47.5 to 41.0% (P = 0.002), it remained steady for others. Compared to White, Asian/Pacific Islander (PI) race was linked to increased odds of mortalty (AOR = 1.4, 95% CI = 1.1-2.0). Black race was associated with increased odds of acute kidney injury (AOR = 1.4, 95%-CI: 1.2-1.7), while Hispanic race was linked to neurologic complications (AOR 21.6; 95% CI 1.2-2.3). Black and Hispanic race were also associated with increased incremental costs.

Conclusions: Race-based disparities in ECMO outcomes persist in the United States. Further work should aim to understand and mitigate the underlying reasons for such findings.

Keywords: Extracorporeal membrane oxygenation; National inpatient sample; Outcomes; Racial disparities; Resource utilization.