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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.
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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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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.
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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.
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Related Experiment Video

Updated: Sep 15, 2025

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Transfusion Testing During Routine Pregnancies: Consensus Recommendations from a Modified Delphi Process.

Heather VanderMeulen1, Mira Shuman2, Poh Nyuk Fam3

  • 1Department of Medicine, University of Toronto, Toronto, ON.

Journal of Obstetrics and Gynaecology Canada : JOGC = Journal D'Obstetrique Et Gynecologie Du Canada : JOGC
|July 12, 2025
PubMed
Summary

Expert consensus statements were developed to standardize perinatal transfusion testing and Rh immunoglobulin (RhIG) administration in low-risk pregnancies across Canada. These guidelines aim to harmonize practices and address resource limitations, particularly in rural areas.

Keywords:
Delphi techniqueperinatologypregnancytransfusion medicine

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Area of Science:

  • Obstetrics and Gynecology
  • Transfusion Medicine
  • Maternal-Fetal Medicine

Background:

  • Perinatal transfusion testing and Rh immunoglobulin (RhIG) administration protocols can vary.
  • Conflicting guidelines and resource limitations impact consistent care, especially in rural Canadian settings.

Purpose of the Study:

  • To standardize perinatal transfusion testing and RhIG administration in low-risk pregnancies.
  • To create expert consensus statements for Canadian perinatal care.

Main Methods:

  • A modified Delphi consensus process was employed with a national expert panel.
  • Iterative rounds of voting and analysis were conducted until consensus (Cronbach's alpha >0.95 or 3 rounds) was achieved.
  • Statements with a median score ≥4 out of 5 were included.

Main Results:

  • Twenty-one expert consensus statements on perinatal transfusion testing and RhIG administration were finalized.
  • Panellists represented diverse specialties across Canadian provinces, including a patient representative.
  • Key areas for potential practice change included eliminating the 28-week screen and adjusting RhIG administration timing.

Conclusions:

  • The 21 statements aim to harmonize Canadian perinatal practice from the first trimester to neonate delivery.
  • This initiative addresses conflicting guidelines and resource constraints, aligning with Choosing Wisely principles.
  • Some statements represent practice-changing recommendations requiring implementation efforts.