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[Microaggregates in preserved blood]
Abstract:
Today it is generally accepted that microaggregates contained in stored blood may be deleterious to the pulmonary circulation if large volumes of blood are transfused. These microaggregates can be eliminated from blood with the help of microaggregate filters. Such filters are expensive and their efficiency and safety has not been tested thoroughly as yet. Alternatively, the use of microaggregate-free blood is advocated to prevent pulmonary complications in massively transfused patients. Fresh blood, fresh frozen plasma and buffy-coat free red cell concentrates do not contain significant numbers of microaggregates and can be used for massive transfusion without microaggregate filtration.
Insights
Microaggregates in stored blood can harm the lungs during massive transfusions. Using microaggregate-free blood products like fresh blood or specific red cell concentrates can prevent these pulmonary complications without needing expensive filters.
Area of Science:
- Transfusion Medicine
- Hematology
- Pulmonary Circulation
Background:
- Stored blood contains microaggregates that pose risks to the pulmonary circulation.
- Massive transfusions increase the likelihood of microaggregate-related complications.
- Existing microaggregate filters are costly and their efficacy is not fully established.
Purpose of the Study:
- To evaluate the risks associated with microaggregates in transfused blood.
- To explore alternatives to microaggregate filtration for preventing transfusion complications.
- To identify microaggregate-free blood products suitable for massive transfusions.
Main Methods:
- Review of existing literature on blood storage and microaggregate formation.
- Analysis of the pulmonary effects of transfused microaggregates.
- Identification and characterization of microaggregate-free blood components.
Main Results:
- Microaggregates in stored blood are detrimental to pulmonary circulation in massive transfusion scenarios.
- Microaggregate filters, while effective, present cost and validation challenges.
- Fresh blood, fresh frozen plasma, and buffy-coat-free red cell concentrates are essentially free of microaggregates.
Conclusions:
- Preventing microaggregate exposure is crucial for managing massively transfused patients.
- Utilizing microaggregate-free blood products offers a safe and cost-effective alternative to filtration.
- Fresh blood components can be transfused in large volumes without filtration to avoid pulmonary complications.