Autologous Blood Transfusion: Definition, Types and Benefits
An autologous blood transfusion is a procedure in which a patient's own blood is collected and reinfused when needed, helping to avoid the use of donor blood.
Wissenswertes über "Autologous Blood Transfusion"
An autologous blood transfusion is a procedure in which a patient's own blood is collected and reinfused when needed, helping to avoid the use of donor blood.
What Is an Autologous Blood Transfusion?
An autologous blood transfusion is a medical procedure in which a patient's own blood is collected before or during a surgical procedure and reinfused into the same patient when needed. The primary goal is to avoid the use of donor (allogeneic) blood and thereby reduce associated risks such as transfusion reactions, immune responses, and the transmission of infectious diseases.
Types of Autologous Blood Transfusion
Preoperative Autologous Blood Donation
In this approach, blood is collected from the patient in the weeks before a scheduled surgery and stored until needed. The patient's body naturally replenishes the donated blood before the procedure takes place.
Intraoperative Cell Salvage
During surgery, blood lost from the operative field is collected, washed, filtered, and reinfused into the patient in real time using specialized equipment. This method is widely used in cardiovascular and major orthopedic surgeries.
Postoperative Drainage Retransfusion
After surgery, blood collected from wound drains is processed and returned to the patient. This technique is commonly used following joint replacement procedures.
When Is Autologous Transfusion Used?
Autologous blood transfusion is primarily indicated for elective (planned) surgeries where significant blood loss is anticipated. Common clinical applications include:
- Cardiac surgery
- Orthopedic procedures (e.g., hip or knee replacement)
- Vascular surgery
- Neurosurgery
- Patients who decline donor blood for religious reasons (e.g., Jehovah's Witnesses)
Advantages of Autologous Transfusion
Returning a patient's own blood offers several benefits compared to allogeneic transfusion:
- No risk of infectious disease transmission (e.g., HIV, hepatitis B or C)
- No immune reactions, as the blood is the patient's own
- No blood group incompatibility risks
- Preservation of public blood supply reserves
- Psychological benefit for patients who refuse donor blood
Risks and Limitations
Although autologous transfusion has many advantages, it is not without limitations:
- Preoperative donation may cause temporary anemia if the patient's hemoglobin levels are borderline.
- Stored blood can become contaminated if handling protocols are not strictly followed.
- Not all patients are suitable candidates -- those with severe anemia, active infections, or significant cardiovascular disease may be excluded.
- The process is more complex and resource-intensive than using donated blood from a blood bank.
Procedure and Preparation
Before a preoperative autologous blood donation program begins, the patient undergoes a medical evaluation to confirm suitability. Donations are typically scheduled at weekly intervals in the weeks leading up to surgery. Blood is stored refrigerated or frozen until the day of the procedure. During or after surgery, the blood is transfused as clinically required. Throughout this process, strict labeling and identification protocols ensure patient safety.
References
- German Medical Association (Bundesärztekammer) – Cross-sectional Guidelines on Therapy with Blood Components and Plasma Derivatives (2020)
- Mueller M. M. et al. – Patient Blood Management: Recommendations from the 2018 Frankfurt Consensus Conference, JAMA (2019), PubMed PMID: 30778637
- World Health Organization (WHO) – Blood Transfusion Safety: Autologous Transfusion, WHO Guidelines
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