Immunohaematology: Difference between revisions

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'''Immunohaematology''' is a branch of [[haematology]] that studies the interaction between the [[immune system]] and [[blood cells]]. This field is primarily concerned with the immunological properties of blood, including the study of [[blood groups]], [[blood transfusion]], and the immune response to blood cell and blood product [[antigen]]s.
{{DISPLAYTITLE:Immunohaematology}}
 
== Immunohaematology ==
[[File:Red_White_Blood_cells.jpg|thumb|right|Red and white blood cells]]
'''Immunohaematology''' is a branch of [[hematology]] that studies [[antigen]]-[[antibody]] reactions and analogous phenomena as they relate to the pathogenesis and clinical manifestations of [[blood]] disorders. It is a critical field in [[transfusion medicine]], [[organ transplantation]], and [[autoimmune disease]]s.


== Overview ==
== Overview ==
Immunohaematology, also known as [[blood banking]], is a vital part of [[transfusion medicine]]. It involves the study of [[antibodies]] and [[antigens]] present in the blood, and their role in [[blood transfusion]] reactions and [[autoimmune diseases]].  
Immunohaematology involves the study of [[blood group]]s, [[blood transfusion]]s, and the [[immune system]]'s response to foreign blood components. It is essential for ensuring the compatibility of blood transfusions and for understanding the mechanisms of [[hemolytic disease of the newborn]] and [[autoimmune hemolytic anemia]].


== Blood Groups ==
== Blood Groups ==
The most well-known aspect of immunohaematology is the study of [[blood groups]], which are determined by specific antigens on the surface of [[red blood cells]]. The most commonly known blood groups are the [[ABO blood group system]] and the [[Rh blood group system]].  
The most well-known blood group systems are the [[ABO blood group system]] and the [[Rh blood group system]]. These systems are determined by the presence or absence of specific antigens on the surface of [[red blood cells]].


=== ABO Blood Group System ===
=== ABO Blood Group System ===
The [[ABO blood group system]] is the most important blood group system in human blood transfusion. The ABO blood group system includes four different blood groups: A, B, AB, and O. Each group is characterized by a specific set of antigens on the surface of red blood cells.
The ABO blood group system is based on the presence of [[A antigen|A]] and [[B antigen|B]] antigens. Individuals can have type A, B, AB, or O blood, depending on the combination of these antigens.


=== Rh Blood Group System ===
=== Rh Blood Group System ===
The [[Rh blood group system]] is the second most significant blood group system in human blood transfusion. It is named after the [[Rhesus monkey]], in which it was first discovered. The most important antigen in this system is the D antigen. Individuals who have this antigen are referred to as Rh positive, while those who lack it are referred to as Rh negative.
The Rh blood group system is primarily concerned with the presence or absence of the [[Rh factor]], also known as the D antigen. Individuals are classified as Rh-positive or Rh-negative.


== Blood Transfusion ==
== Blood Transfusion ==
Immunohaematology plays a crucial role in [[blood transfusion]]. It ensures the compatibility of the blood types of the donor and the recipient to prevent [[transfusion reactions]]. These reactions can occur if the recipient's immune system attacks the donor blood cells, which can happen if the recipient has antibodies against the donor's blood group antigens.
[[Blood transfusion]] is a common medical procedure that involves transferring blood or blood components from a donor to a recipient. Immunohaematology plays a crucial role in ensuring the compatibility of donor and recipient blood to prevent adverse reactions.
 
=== Crossmatching ===
[[Crossmatching]] is a laboratory test performed before a blood transfusion to ensure compatibility between donor and recipient blood. It involves mixing a small sample of the recipient's serum with the donor's red blood cells to check for agglutination.
 
== Hemolytic Disease of the Newborn ==
[[Hemolytic disease of the newborn]] (HDN) is a condition that occurs when there is an incompatibility between the blood types of the mother and fetus. It is most commonly associated with the Rh blood group system.


== Autoimmune Diseases ==
== Autoimmune Hemolytic Anemia ==
Immunohaematology also studies [[autoimmune diseases]] that affect the blood. These diseases occur when the immune system mistakenly attacks the body's own blood cells. Examples of such diseases include [[autoimmune haemolytic anaemia]] and [[immune thrombocytopenic purpura]].
[[Autoimmune hemolytic anemia]] (AIHA) is a condition in which the immune system mistakenly attacks and destroys the body's own red blood cells. Immunohaematology is involved in diagnosing and understanding the mechanisms of AIHA.


== See Also ==
== Related Pages ==
* [[Haematology]]
* [[Hematology]]
* [[Transfusion medicine]]
* [[Transfusion medicine]]
* [[ABO blood group system]]
* [[Blood group]]
* [[Rh blood group system]]
* [[Antigen]]
* [[Autoimmune diseases]]
* [[Antibody]]


[[Category:Immunohaematology]]
[[Category:Hematology]]
[[Category:Haematology]]
[[Category:Immunology]]
[[Category:Immunology]]
[[Category:Transfusion medicine]]
{{medicine-stub}}

Latest revision as of 05:52, 16 February 2025


Immunohaematology[edit]

Red and white blood cells

Immunohaematology is a branch of hematology that studies antigen-antibody reactions and analogous phenomena as they relate to the pathogenesis and clinical manifestations of blood disorders. It is a critical field in transfusion medicine, organ transplantation, and autoimmune diseases.

Overview[edit]

Immunohaematology involves the study of blood groups, blood transfusions, and the immune system's response to foreign blood components. It is essential for ensuring the compatibility of blood transfusions and for understanding the mechanisms of hemolytic disease of the newborn and autoimmune hemolytic anemia.

Blood Groups[edit]

The most well-known blood group systems are the ABO blood group system and the Rh blood group system. These systems are determined by the presence or absence of specific antigens on the surface of red blood cells.

ABO Blood Group System[edit]

The ABO blood group system is based on the presence of A and B antigens. Individuals can have type A, B, AB, or O blood, depending on the combination of these antigens.

Rh Blood Group System[edit]

The Rh blood group system is primarily concerned with the presence or absence of the Rh factor, also known as the D antigen. Individuals are classified as Rh-positive or Rh-negative.

Blood Transfusion[edit]

Blood transfusion is a common medical procedure that involves transferring blood or blood components from a donor to a recipient. Immunohaematology plays a crucial role in ensuring the compatibility of donor and recipient blood to prevent adverse reactions.

Crossmatching[edit]

Crossmatching is a laboratory test performed before a blood transfusion to ensure compatibility between donor and recipient blood. It involves mixing a small sample of the recipient's serum with the donor's red blood cells to check for agglutination.

Hemolytic Disease of the Newborn[edit]

Hemolytic disease of the newborn (HDN) is a condition that occurs when there is an incompatibility between the blood types of the mother and fetus. It is most commonly associated with the Rh blood group system.

Autoimmune Hemolytic Anemia[edit]

Autoimmune hemolytic anemia (AIHA) is a condition in which the immune system mistakenly attacks and destroys the body's own red blood cells. Immunohaematology is involved in diagnosing and understanding the mechanisms of AIHA.

Related Pages[edit]