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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

Blood Transfusion and Agglutination

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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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The ABO Blood Group01:12

The ABO Blood Group

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The ABO blood group system is a critical element of transfusion medicine, essential for determining blood compatibility in transfusions and organ transplants. It is based on specific antigens, or agglutinogens, present on the surface of red blood cells (RBCs) and corresponding antibodies, or agglutinins, in the blood plasma.
Antigens in the ABO Blood Group System
Antigens are substances that can trigger an immune response, leading to the production of antibodies. In the ABO blood group system,...
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Blood Types02:20

Blood Types

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Human blood is classified into different types based on the presence of antigens on the red blood cell's surface and antibodies in the plasma. Proper identification of blood type is essential for successful blood transfusion. The International Society of Blood Transfusion has identified 38 human blood types based on the surface antigens on the red blood cells. The most common types are ABO, Rh, and MNS blood types.
ABO blood group
ABO antigens are glycoproteins encoded by genes present on...
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Blood Typing01:10

Blood Typing

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Understanding an individual's blood group is a critical component of transfusion medicine. It ensures compatibility in blood transfusions, organ transplants, and even during pregnancy. Determining these blood groups involves the ABO and Rh blood typing systems, utilizing specific antigens and corresponding anti-sera to identify an individual's blood type.
Antigens are protein molecules that reside on the surface of red blood cells (RBCs). The ABO and Rh blood typing systems target...
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Rh Blood Group01:19

Rh Blood Group

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The Rhesus (Rh) antigen is crucial in determining blood groups and ensuring compatibility during blood transfusions.
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Related Experiment Video

Updated: Jul 13, 2025

A Precision Medicine Tool for Measurement and Monitoring of Hemoglobin S in Sickle Cell Disease Patients Receiving Transfusion Therapy
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Red Blood Cell Transfusion: 2023 AABB International Guidelines.

Jeffrey L Carson1, Simon J Stanworth2,3,4,5, Gordon Guyatt6

  • 1Department of Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, New Jersey.

JAMA
|October 12, 2023
PubMed
Summary

Restrictive red blood cell transfusion strategies are recommended for most hospitalized adults and critically ill children. These approaches, using lower hemoglobin thresholds, show no adverse effects on patient outcomes and are considered good practice.

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Prediction of Red Blood Cell Antibody Significance Using the Monocyte-Macrophage Assay
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Area of Science:

  • Hematology
  • Transfusion Medicine
  • Clinical Guidelines

Background:

  • Red blood cell transfusion is a common medical intervention with associated benefits and harms.
  • Establishing optimal transfusion thresholds is crucial for patient safety and effective care.

Purpose of the Study:

  • To provide evidence-based recommendations for the use of red blood cell transfusion in adult and pediatric populations.
  • To guide clinicians on appropriate hemoglobin thresholds for transfusion decisions.

Main Methods:

  • Systematic reviews of randomized controlled trials (RCTs) were conducted.
  • The Grading of Recommendations Assessment, Development and Evaluation (GRADE) methodology was employed.
  • Conflicts of interest were managed, and values and preferences were made explicit.

Main Results:

  • For most adult and pediatric patients, restrictive transfusion thresholds (hemoglobin < 7 g/dL) did not adversely affect outcomes.
  • Strong recommendations for restrictive transfusion strategies were made for stable hospitalized adults and critically ill children.
  • Conditional recommendations for restrictive strategies were suggested for adults with hematologic/oncologic disorders and specific pediatric cardiac conditions.

Conclusions:

  • Restrictive red blood cell transfusion strategies are generally safe and effective across various patient populations.
  • Clinical context and alternative therapies should be considered alongside transfusion decisions.
  • These recommendations aim to optimize the use of red blood cell transfusions, balancing benefits and harms.