1. Long-term survival in patients with post-LVAD right ventricular failure: multi-state modelling with competing outcomes of heart transplant
- Author
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Ashrith Guha, Patpilai Kasinpila, Michelle Li, Robyn Fong, Jeffrey J. Teuteberg, Theodore Boeve, Kate M. Callon, Nicolas Quach, Sangjin Lee, Miguel Castro, Yasuhiro Shudo, Erik E. Suarez, Curtis P. Langlotz, Rohan Shad, Cayley Bowles, Stefan Jovinge, and William Hiesinger
- Subjects
Male ,Reoperation ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Time Factors ,Heart Ventricles ,Ventricular Dysfunction, Right ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,03 medical and health sciences ,Postoperative Complications ,0302 clinical medicine ,Internal medicine ,Long term survival ,Humans ,Medicine ,In patient ,030212 general & internal medicine ,Survival analysis ,Retrospective Studies ,Heart Failure ,Heart transplantation ,Transplantation ,business.industry ,Retrospective cohort study ,Middle Aged ,Prognosis ,medicine.disease ,United States ,Survival Rate ,Heart failure ,Circulatory system ,Ventricular Function, Right ,Cardiology ,Heart Transplantation ,Equipment Failure ,Female ,Surgery ,Heart-Assist Devices ,Implant ,Cardiology and Cardiovascular Medicine ,business ,Follow-Up Studies - Abstract
BACKGROUND Multicenter data on long term survival following LVAD implantation that make use of contemporary definitions of RV failure are limited. Furthermore, traditional survival analyses censor patients who receive a bridge to heart transplant. Here we compare the outcomes of LVAD patients who develop post-operative RV failure accounting for the transitional probability of receiving an interim heart transplantation. METHODS We use a retrospective cohort of LVAD patients sourced from multiple high-volume centers based in the United States. Five- and ten-year survival accounting for transition probabilities of receiving a heart transplant were calculated using a multi-state Aalen Johansen survival model. RESULTS Of the 897 patients included in the study, 238 (26.5%) developed post-operative RV failure at index hospitalization. At 10 years the probability of death with post-op RV failure was 79.28% vs 61.70% in patients without (HR 2.10; 95% CI 1.72 - 2.57; p = < .001). Though not significant, patients with RV failure were less likely to be bridged to a heart transplant (HR 0.87, p = .4). Once transplanted the risk of death between both patient groups remained equivalent; the probability of death after a heart transplant was 3.97% in those with post-operative RV failure shortly after index LVAD implant, as compared to 14.71% in those without. CONCLUSIONS AND RELEVANCE Long-term durable mechanical circulatory support is associated with significantly higher mortality in patients who develop post-operative RV failure. Improving outcomes may necessitate expeditious bridge to heart transplant wherever appropriate, along with critical reassessment of organ allocation policies.
- Published
- 2021
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