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Bleeding in Patients With Infarct-Related Cardiogenic Shock: A DanGer Shock Substudy.

Rikke Sørensen1, Jacob Eifer Møller2, Christophe Vandenbriele3

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Summary
This summary is machine-generated.

The microaxial flow pump (mAFP) increased bleeding events in ST-elevation myocardial infarction and cardiogenic shock patients compared to standard care. Bleeding risk also rose with mechanical circulatory support complexity, with half occurring post-removal.

Keywords:
STEMIbleedingcardiogenic shockmicroaxial-flow-pump

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Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Mechanical Circulatory Support

Background:

  • Microaxial flow pump (mAFP) shows promise for ST-elevation acute myocardial infarction with cardiogenic shock (STEMI-CS).
  • mAFP use is linked to increased bleeding events, necessitating further investigation.

Purpose of the Study:

  • To analyze bleeding events in STEMI-CS patients treated with mAFP versus standard care.
  • To assess the relationship between bleeding and mechanical circulatory support (MCS) complexity.

Main Methods:

  • The DanGer Shock trial randomized 355 STEMI-CS patients to mAFP or standard care.
  • Bleeding was categorized using Bleeding Academic Research Consortium (BARC) types 3-5.
  • Follow-up included assessment of bleeding during and after MCS use.

Main Results:

  • mAFP group had significantly higher BARC 3-5 bleeding (26.3%) than standard care (15.3%) (P < 0.001).
  • Bleeding risk increased with MCS complexity: mAFP (OR 4.94), VA-ECMO (OR 8.06), and combined mAFP+VA-ECMO (OR 27.40).
  • Multivariable analysis identified mAFP use, renal replacement therapy, and VA-ECMO escalation as bleeding predictors.

Conclusions:

  • Patients receiving mAFP experienced more severe bleeding than those on standard care.
  • Bleeding events were associated with MCS complexity and frequently occurred after device removal.