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Blood transfusions decrease the incidence of acute rejection in cardiac allograft recipients

Félix G Fernández1, Andres Jaramillo, Greg Ewald

  • 1Washington University School of Medicine, St Louis, Missouri 63110, USA.

The Journal of Heart and Lung Transplantation : the Official Publication of the International Society for Heart Transplantation
|July 5, 2005
PubMed

Insights

In heart transplant recipients, receiving more blood transfusions is linked to fewer episodes of acute allograft rejection. This study suggests a protective effect of transfusions against cardiac allograft rejection.

Area of Science:

  • Cardiology
  • Immunology
  • Transplantation Science

Background:

  • Cardiac transplant recipients often require numerous blood transfusions.
  • The relationship between transfusion volume and allograft rejection is not fully understood.

Purpose of the Study:

  • To investigate the association between the total number of blood transfusions and cardiac allograft rejection.
  • To compare outcomes in patients bridged with a left ventricular assist device (LVAD) versus primary transplant.

Main Methods:

  • Retrospective analysis of 82 cardiac transplants (1997-2001).
  • Evaluation of total transfusions, rejection episodes (Grade 3A+), rejection-free survival, and overall survival.
  • Comparison between LVAD-bridged and primary transplant groups.

Main Results:

  • The LVAD group received significantly more transfusions (50 U) than the primary transplant group (7 U).
  • No significant difference in acute rejection incidence or freedom from rejection between groups.
  • A significant inverse correlation was found between total transfusions and acute rejection development (p=0.011).

Conclusions:

  • The number of blood transfusions is inversely related to acute rejection episodes in heart transplant recipients.
  • Transfusions may play a role in mitigating cardiac allograft rejection.
Abstract

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