Background
A left ventricular assist device (LVAD) improves survival and quality of life for many, but not all, patients with end-stage heart failure who are ineligible for transplantation. We sought to evaluate the frequency of poor outcomes using a novel composite measure that integrates quality of life with mortality.
Methods and Results
Within the INTERMACS national registry, poor outcome was defined as death or an average Kansas City Cardiomyopathy Questionnaire<45 over the year following LVAD (persistently limiting heart failure symptoms and poor quality of life). Among 1638 LVAD patients, 29.7% had a poor outcome, with death in 22.4% and persistently poor quality of life in 7.3%. Patients who had a poor outcome were more likely to have higher body mass indices (29.3 vs. 28.2 kg/m2, p=0.007), lower hemoglobin levels (11.1 vs. 11.4 g/dL, p=0.005), prior cardiac surgery (47.8% vs. 39.8%, p=0.004), history of cancer (13.8% vs. 9.7%, p=0.025), severe diabetes (15.6% vs. 11.5%, p=0.038), and poorer quality of life pre-implant (KCCQ scores: 29.8 vs. 35.3, p<0.001).
Conclusions
Nearly one-third of patients die or have a persistently poor quality of life over the year after LVAD. We identified a number of factors associated with a poor outcome, which may inform discussions prior to LVAD implantation to enable more realistic expectations of recovery.