Cardiogenic shock in heart transplant recipients: A multicenter cohort study with matched analysis

Chahem Harba1, Alexis David-Papadopoulos2, Anouk Frering3

  • 1Department of Intensive Care, Institute of Cardiology, Pitié-Salpêtrière Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France.

Insights

Heart transplant recipients with graft failure-related cardiogenic shock (CS) face poor prognoses, with only 25% surviving one year event-free. Key survival predictors include allograft vasculopathy and need for renal replacement therapy.

Area of Science:

  • Cardiology
  • Transplantation Medicine
  • Critical Care Medicine

Background:

  • Cardiogenic shock (CS) in heart transplant recipients (HTR) presents unique challenges.
  • Graft failure is a significant cause of CS post-transplantation.
  • Outcomes for HTR with CS are not well-defined compared to other CS etiologies.

Purpose of the Study:

  • To evaluate the prognosis of HTR experiencing graft failure-related CS.
  • To identify predictors of one-year event-free survival in these patients.
  • To compare the outcomes of HTR with CS to patients with CS from other causes.

Main Methods:

  • Retrospective multicenter study of HTR with CS (≥1 month post-transplant).
  • Primary endpoint: one-year survival without retransplantation or long-term support.
  • Propensity score matching compared HTR on VA-ECMO to AMICS and other immunocompromised CS patients.

Main Results:

  • Cardiac allograft rejection (51%) and coronary allograft vasculopathy (19%) were primary CS causes in HTR.
  • One-year event-free survival was 25%.
  • Predictors of poor survival included CAV grade ≥2, renal replacement therapy, advanced SCAI stage, and ECMO during CPR. HTR on VA-ECMO had lower 90-day survival than AMICS patients (22% vs 55%).

Conclusions:

  • CS post-heart transplantation is associated with a grave prognosis, with low one-year event-free survival.
  • Outcomes for HTR with CS requiring VA-ECMO were worse than for AMICS patients.
  • Survival for HTR with CS was comparable to other immunocompromised patients requiring similar support.
Abstract