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[Blood transfusion and bacterial risk]
P Morel1, M F Leconte des Floris, L Bardiaux
1Etablissement de transfusion sanguine de Franche-Comté, BP 1937, Besançon, France.
Abstract:
Initial hemovigilance data confirm the incidence and severity of transfusion reactions due to the bacterial contamination of blood components (TRBCs). With 18 deaths reported through the French hemovigilance network over the past five years, bacterial risks represent one of the major immediate complications of BC transfusion. BC contamination may lead to more or less severe TRBCs, depending on their origin: bacteria growth, the BC itself or unknown origin. Although the rate of donated blood or BC contamination is known (0.5% and 0.05%, respectively), it is still difficult to assess the actual incidence of TRBCs, as it is difficult to identify and relate them to transfusion. Likewise, a better knowledge of bacteria, symptoms, and outcome is required to improve prevention methods. Better prevention can reduce BC contamination and proliferation of bacteria at each stage of blood transfusion. Methods of detecting BC contamination are still under investigation. Through continuous education of hemovigilance participants in identifying and dealing with TRBCs, as well as drawing up procedures to perform inquiries and specific bacterial analyses, case reporting can be further improved, in order to achieve more efficient prevention.
Insights
Bacterial contamination of blood components (BC) causes severe transfusion reactions and deaths. Improved detection and prevention methods are crucial to reduce these risks in blood transfusions.
Area of Science:
- Transfusion Medicine
- Infectious Disease Epidemiology
- Hemovigilance
Background:
- Bacterial contamination of blood components (BC) is a significant cause of transfusion reactions and mortality.
- Hemovigilance data indicate that bacterial risks are a major immediate complication of BC transfusion, with 18 deaths reported in France over five years.
- The exact incidence of transfusion reactions due to bacterial contamination (TRBCs) is difficult to ascertain due to challenges in identification and attribution.
Purpose of the Study:
- To highlight the incidence and severity of TRBCs based on initial hemovigilance data.
- To emphasize the need for improved knowledge of bacteria, symptoms, and outcomes to enhance prevention strategies.
- To underscore the ongoing investigation into methods for detecting BC contamination and the importance of continuous education and improved reporting procedures.
Main Methods:
- Analysis of initial hemovigilance data to confirm the incidence and severity of TRBCs.
- Review of reported deaths and complications associated with BC transfusion.
- Discussion of the challenges in assessing TRBC incidence and the need for improved detection methods.
Main Results:
- Bacterial contamination of BC can lead to TRBCs of varying severity.
- Known contamination rates for donated blood (0.5%) and BC (0.05%) exist, but actual TRBC incidence remains hard to determine.
- 18 deaths were reported via the French hemovigilance network in five years, underscoring the severity of bacterial risks.
Conclusions:
- Bacterial contamination of blood components poses a significant threat, necessitating enhanced prevention strategies.
- Improved methods for detecting BC contamination and better hemovigilance reporting are essential for reducing TRBCs.
- Continuous education of hemovigilance participants and standardized investigative procedures are key to more efficient prevention of transfusion-related bacterial infections.