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The effect of transfusion on cardiac function in patients with chronic anemia
1Division of Hematology, Veterans General Hospital, Taipei, Taiwan, ROC.
Insights
Red blood cell transfusions have minimal immediate impact on cardiac function in chronic anemia patients. However, pre-existing ejection fraction, not anemia severity, influences post-transfusion cardiac improvement.
Area of Science:
- Cardiology
- Hematology
Background:
- Chronic anemia can lead to deteriorating cardiac function.
- Red blood cell (RBC) transfusions are a potential intervention for improving cardiac health in these patients.
Purpose of the Study:
- To evaluate the immediate effect of RBC transfusions on cardiac function in patients with chronic anemia.
- To identify factors influencing the change in cardiac function post-transfusion.
Main Methods:
- A prospective study involving 41 patients with chronic anemia.
- Ejection fraction (EF) was measured before and after RBC transfusion.
- Statistical analysis was performed to correlate transfusion parameters and pre-transfusion EF with post-transfusion EF changes.
Main Results:
- The volume of RBCs transfused and pre-transfusion hematological parameters did not significantly impact post-transfusion EF.
- Pre-transfusion EF of either the right or left ventricle inversely correlated with the post-transfusion change in EF for the respective ventricle.
- No significant difference was observed in the change of EF between the right and left ventricles.
Conclusions:
- RBC transfusions have a limited immediate effect on cardiac function in chronic anemia.
- The pre-transfusion EF is a key determinant of the post-transfusion change in EF, rather than the degree of anemia or transfusion volume.
- Transfusions can facilitate cardiac function improvement in chronic anemia patients, primarily influenced by baseline cardiac status.
Background:
The deteriorating cardiac function of patients with chronic anemia may be improved with transfusion. The effect of transfusion on cardiac function was evaluated in patients with chronic anemia.
Study Design And Methods:
In a prospective study, ejection fraction (EF) was determined before and after transfusion in 41 patients with chronic anemia. The results were compared and analyzed.
Results:
The volume of red cells transfused and the levels of pretransfusion hemoglobin, hematocrit, and red cell, white cell, and platelet counts did not affect the posttransfusion EF, whereas the pretransfusion EF of the right or left ventricle inversely affected the posttransfusion change in EF in the respective ventricle (p < 0.001 and r = -0.5022; p = 0.01 and -0.3917, respectively). There was no significant difference in the change in EF in the right and left ventricles.
Conclusion:
Transfusion produced little immediate effect on cardiac function, but did change the EF to an extent that aided cardiac function in chronic anemia patients. The pretransfusion EF itself, but not the degree of anemia or volume of red cells transfused, affected the posttransfusion change in EF.