Racial and Ethnic Disparities in Ambulatory Heart Failure Ventricular Assist Device Implantation and Survival

BACKGROUND Durable left ventricular assist devices (VADs) improve survival in eligible patients, but allocation has been associated with patient race in addition to presumed heart failure (HF) severity. OBJECTIVES This study sought to determine racial and ethnic differences in VAD implantation rates and post-VAD survival among patients with ambulatory HF.METHODS Using the INTERMACS (Interagency Registry of Mechanically Assisted Circulatory Support) database (2012-2017), this study examined census-adjusted VAD implantation rates by race, ethnicity, and sex in patients with ambu-latory HF (INTERMACS profile 4-7) using negative binomial models with quadratic effect of time. Survival was evaluated using Kaplan-Meier estimates and Cox models adjusted for clinically relevant variables and an interaction of time with race/ethnicity.RESULTS VADs were implanted in 2,256 adult patients with ambulatory HF (78.3% White, 16.4% Black, and 5.3% Hispanic). The median age at implantation was lowest in Black patients. Implantation rates peaked between 2013 and 2015 before declining in all demographic groups. From 2012 to 2017, implantation rates overlapped for Black and White patients but were lower for Hispanic patients. Post-VAD survival was significantly different among the 3 groups (log rank P 1/4 0.0067), with higher estimated survival among Black vs White patients (12-month survival: Black patients: 90% [95% CI: 86%-93%]; White patients: 82% [95% CI: 80%-84%]). Low sample size for Hispanic patients resulted in imprecise survival estimates (12-month survival: 85% [95% CI: 76%-90%]).CONCLUSIONS Black and White patients with ambulatory HF had similar VAD implantation rates but rates were lower for Hispanic patients. Survival differed among the 3 groups, with the highest estimated survival at 12 months in Black patients. Given higher HF burden in minoritized populations, further investigation is needed to understand differences in VAD implantation rates in Black and Hispanic patients. (J Am Coll Cardiol HF 2023;11:1397-1407)(c) 2023 by the American College of Cardiology Foundation.

Automated summary

This study examines racial and ethnic differences in ventricular assist device (VAD) implantation rates and post-implantation survival among patients with ambulatory heart failure. The study finds that black patients have higher VAD implantation rates and better post-VAD survival compared to white and Hispanic patients.