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Related Concept Videos

Blood Transfusion01:15

Blood Transfusion

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Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
Blood Transfusion Overview
A blood transfusion is a medical procedure used to replace blood lost due to injury, surgery, or to treat conditions such as anemia or cancer. During a transfusion, donor blood is...
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Blood Transfusion and Agglutination02:45

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Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
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Predicting alloimmunization risk in transfusion patients: A multivariate model and simplified scoring system.

Wajnat A Tounsi1

  • 1Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.

Transfusion and Apheresis Science : Official Journal of the World Apheresis Association : Official Journal of the European Society for Haemapheresis
|November 5, 2025
PubMed
Summary

A new risk score predicts red blood cell (RBC) alloimmunization in transfusion patients. Key factors include RhD negative status, female gender, and transfusion history, enabling personalized transfusion strategies.

Keywords:
Antibody ScreeningPrediction modelRBC AlloimmunizationTransfusion reaction

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Area of Science:

  • Hematology
  • Immunology
  • Transfusion Medicine

Background:

  • Red blood cell (RBC) alloimmunization is a significant complication for transfusion-dependent patients, especially those with hemoglobinopathies and hematologic malignancies.
  • Existing studies in Saudi Arabia lack predictive frameworks for alloimmunization risk.
  • High alloimmunization rates necessitate improved strategies for transfusion support.

Purpose of the Study:

  • To develop a multivariate predictive model for RBC alloimmunization risk.
  • To create a simplified risk scoring system for transfusion recipients.
  • To forecast alloimmunization risk at King Abdulaziz University Hospital (KAUH), Jeddah.

Main Methods:

  • Retrospective observational study of 3316 patients receiving blood transfusions.
  • Analysis of clinical, demographic, and transfusion-related variables.
  • Logistic regression to identify predictors; derivation and validation of a point-based scoring system.

Main Results:

  • Overall alloimmunization rate was 5.0%.
  • Significant predictors included RhD negative status, female gender, hematological diagnosis, and transfusion exposure.
  • The scoring system stratified patients into low (3.7%), moderate (11.4%), and high (35.7%) risk categories; AUC = 0.73.

Conclusions:

  • Identified key clinical predictors for RBC alloimmunization.
  • Introduced a practical risk scoring tool for personalized transfusion strategies.
  • Facilitates early identification of high-risk patients for targeted interventions like genotyping and extended antigen matching.