IntroductionAlthough heart transplantation remains the gold standard for the treatment of end-stage heart failure with an average 2-year survival rate of 80%, 1) its epidemiological impact is limited by organ availability. 2) Over the last 5 years, rotary left ventricular assist devices (LVADs) have been used increasingly either as a bridge to transplant or for permanent support. In spite of their clinical efficacy, LVADs remain associated with serious complications which compromise outcome. However, the association between changes in haemodynamic parameters during support and outcome remains inadequately Purpose: Despite their efficacy, LVADs remain associated with serious complications. The relationship between haemodynamic changes during support and outcome remains inadequately characterised. This association was investigated in LVAD recipients undergoing prolonged support. Methods: Forty patients receiving LVAD therapy for >2 years were reviewed retrospectively (mean support duration was 38.62 ± 15.28). Pre-and on-LVAD haemodynamic data were assessed in three groups: (1) those receiving ongoing support (n = 24); (2) those who underwent cardiac transplantation (n = 4); (3) those who died during support (n = 12). Results: For group 1 and 2, LVAD support achieved a decrease in mean PAP, mean PCWP, TPG, and PVR and an increase in thermodilution blood flow (TBF) with significance at ≤5% level. For group 3, there were non-significant changes in TPG and PVR at the 5% level but for mean PAP, mean PCWP, and TBF the changes were similar to Groups 1 and 2 with significance at ≤5% level. Aggregated data from all three groups showed a 58% increase in TBF on LVAD support. Conclusion: Highly significant and favourable haemodynamic changes were found. However, group 3 did not undergo decrease in TPG and PVR possibly because of suboptimal LVAD flow, right heart dysfunction and unavoidable prolongation of support.