Outcomes of microaxial flow pump use in acute-on-chronic heart failure

Background The mortality rate associated with acute decompensated heart failure (ADHF) is high, and prognosis depends on restoring cardiac output. Patients frequently require mechanical circulatory support (MCS). The Impella microaxial flow pump (mAFP) is a short-term MCS used to stabilize patients. We report outcomes of mAFP use in patients with pre-existing chronic heart failure who presented with ADHF. Materials and Methods This retrospective single-center study included all patients with a history of chronic heart failure who presented with ADHF and were managed with mAFP. Demographic characteristics, hemodynamic variables, complications and clinical outcomes were evaluated. Results Fifty-eight patients were included. Patients were managed with the Impella 5.5/5.0 (n=52, 89.7%) or CP (n=6, 10.3%). After mAFP implantation, there was a significant reduction in vasoactive inotropic score (p