Abstract 4128187: Does Health-related Quality of Life Differ by Race over time in Older Patients with Heart Failure from Before to After Heart Transplantation or Long-term Mechanical Circulatory Support?

Background: Minority patients are disproportionately affected by heart failure. Therefore, we aimed to determine the impact of race on health-related quality of life in three groups of older patients (60-80 years) with heart failure who underwent advanced surgical therapies (within race and by surgery group): (1) heart transplantation (HT, with pre-transplant mechanical circulatory support [HT MCS]), (2) HT without pre-transplant MCS (HT Non-MCS), or (3) long-term MCS, if ineligible for HT. Methods: Secondary analyses were conducted using data from the Sustaining Quality of Life of the Aged: Heart Transplant or Mechanical Support study. From 10/1/15 to 12/31/18, 396 patients with heart failure were recruited at 13 U.S. medical centers, of which 305 patients underwent HT (n=161 [68 HT MCS and 93 HT Non-MCS]) or long-term MCS (n=144) and had data through 1 year follow-up. Analysis included non-inferiority testing (Long-term MCS vs HT MCS; Long-term MCS vs HT Non-MCS). To demonstrate non-inferiority, the surgical strategies by race needed to show a difference of at least 5 percentage points, with a 95% lower confidence boundary and a two-tailed p-value<0.05 in health-related quality of life, using the Kansas City Cardiomyopathy-12 Questionnaire Overall Summary Score at baseline and 3-, 6-, and 12 months. Results: The entire cohort was on average 66.2±4.7 years, 78% male, and 84% White. All three surgical groups experienced improved health-related quality of life from before to 1 year follow-up; with the largest gain through 3-months. Using non-inferiority testing, the long-term MCS minority group did not demonstrate non-inferiority when compared to both the HT MCS minority group and HT Non-MCS minority group confidence limits above the non-inferiority margin of -5 (Figure). Also, the White long-term MCS group did not demonstrate non-inferiority when compared to the White HT MCS and White HT Non-MCS groups. Conclusion: Differences in health-related quality of life among groups based on race were not statistically significant. Per non-inferiority testing, HT is superior to long-term MCS for health-related quality of life, regardless of race.