Background
Although left ventricular assist device (LVAD) implantation is associated with improved heart failure survival, the impact of pre‐implantation Impella support on outcomes is unknown. We undertook this study to evaluate the impact of preoperative Impella support on LVAD outcomes.
Methods
We conducted a retrospective review of all Heartmate 3 LVAD implants. Primary stratification was by the need for preoperative Impella support with the 5.0/5.5 device. Longitudinal survival was assessed by the Kaplan–Meier method. Multivariable Cox proportional hazards regression models were developed to evaluate mortality. Secondary outcomes included changes in laboratory values during Impella support.
Results
From 2017 to 2021, 87 patients underwent LVAD implantation. Sixteen were supported with a single inotrope, 36 with dual inotropes, 27 with Impella, and 3 with extracorporeal membrane oxygenation (ECMO). When stratified by the need for Impella, there was no difference in survival at 30‐days (98.3 [88.2–99.8]% vs. 96.3 [76.5–99.5]%, p = .59), 1‐year (91.0 [79.8–96.2] vs. 74.9 [51.7–88.2], p = .10), or at 2 years (87.9 [74.3–94.5] vs. 74.9 [51.7–88.2], p = .15). On multivariable modeling, the need for preoperative Impella was not associated with an increased hazard of 1‐year (1.24 [0.23–6.73], p = .81) or 2‐year mortality (1.05 [0.21–5.19], p = .95). After 7 (5–10) days of Impella support, recipient creatinine (p < .01), creatinine clearance (p = .02), and total bilirubin (p = .053) improved and lactic acidosis resolved (p < .01).
Conclusions
Preoperative Impella support is not associated with increased short or long‐term mortality but is associated with improved renal and hepatic function as well as total body perfusion before LVAD implantation.
Introduction: Although the established long-term benefit of left ventricular assist device (LVAD) therapy has led to its proliferation as destination therapy (DT), few studies have evaluated LVAD outcomes at nontransplant centers. We undertook this study to better evaluate our experience in building a nontransplant, DT LVAD program.Methods: We conducted a retrospective review of all LVADs implanted from 2010 to 2021. Patient, operative, and outcome data were extracted from the electronic medical record. Secular trends were evaluated by organizing the data into eras of implant. Survival was assessed using the Kaplan-Meier method. Multivariable Cox proportional hazards regression models further evaluated outcomes.Results: From 2010 to 2021, 100 primary LVAD implants were performed. Annual volume grew from 1 to 30 implants per year. The average age of our cohort was 65.7 years, most patients (80%) were male, 51% had an ischemic etiology, and 65 (65%) were INTERMACS profile 1 or 2. Our 1-and 2-year survival were 82% and 79%, respectively. Multivariable analysis of 1-year mortality demonstrated that decreasing renal function and increased cardiopulmonary bypass (CPB) time were associated with increased mortality while preoperative hemoglobin was protective. When stratified by era of implant, our most recent patients were more likely to be INTERMACS profile 1 or 2; had shorter CPB and aortic cross clamp times; required fewer reoperations for bleeding; and suffered less right ventricular failure requiring mechanical support.Conclusions: A single, nontransplant LVAD center can experience significant growth in volume in a high-acuity cohort while maintaining acceptable outcomes and quality of care.
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