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Switching to centrifugal pumps may decrease hemolysis rates among pediatric ECMO patients.

Kevin N Johnson1, Benjamin Carr2, George B Mychaliska1

  • 1Division of Pediatric Surgery, Mott Children's Hospital, Ann Arbor, MI, USA.

Perfusion
|January 18, 2021
PubMed
Summary
This summary is machine-generated.

Switching to centrifugal pumps in extracorporeal membrane oxygenation (ECMO) significantly reduced hemolysis rates in pediatric patients. Lower hemolysis was linked to improved survival, supporting the use of centrifugal pumps for better ECMO outcomes.

Keywords:
ECMOcentrifugal pumphemolysispediatricsurvival

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Area of Science:

  • Cardiovascular Technology
  • Pediatric Critical Care Medicine
  • Hemodynamics

Background:

  • Centrifugal pumps are increasingly used in extracorporeal circulation (ECLS) technology globally.
  • Concerns persist regarding higher hemolysis rates associated with centrifugal pumps compared to older roller systems.

Purpose of the Study:

  • To evaluate the effect of transitioning from roller pumps to centrifugal pumps on hemolysis rates in pediatric patients undergoing ECMO.
  • To identify risk factors for hemolysis and analyze its impact on patient outcomes.

Main Methods:

  • Retrospective analysis of 590 pediatric ECMO patients from 2005 to 2017.
  • Hemolysis defined as plasma free hemoglobin >50 mg/dL.
  • Multivariable logistic regression used to assess risk factors and outcomes, with significance at p < 0.05.

Main Results:

  • Roller pumps (OR 1.92) and longer ECMO duration (OR 1.002/hr) were significant risk factors for hemolysis.
  • Hemolysis rates significantly decreased after the center transitioned to centrifugal pumps.
  • Hemolysis was associated with an increased risk of death (OR 3.59).

Conclusions:

  • Transitioning to centrifugal pumps is associated with reduced hemolysis rates in pediatric ECMO.
  • Lower rates of hemolysis correlate with improved patient outcomes and survival.
  • These findings support the adoption of centrifugal pumps in ECMO centers to mitigate hemolysis and enhance patient safety.