blood groups Flashcards
patients who lack A or B generate
antibodies
A, B antibodies are what type
IgM
Rh system are all
transmembrane proteins
D antigen is
highly immunogenic
Rh negative may develop
anti-D antibodies
anti-D antibodies are what type of antibodies
IgG
what type of antibodies can cross the placenta
IgG
newborn hemolytic disease is classically caused by
anti-D (anti-Rh) antibodies
newborn hemolytic disease can only occur in
D- mother with D+ baby
newborn hemolytic disease sxs
hydrops fetalis (massive edema)
newborn hemolytic disease prevention
anti-D globulin (RhoGAM) which are IgG antibodies to D antigen is given to mother and macrophages rapidly clear D+ RBCs
blood type testing
patient RBCs plus antibodies and look for agglutination
type and screen
recipient serum plus standard RBCs to screen for patient antibodies to rare antigens
packed RBCs is
RBC with plasma removed
packed RBCs minimizes
vol given to patient
platelets express
ABO and HLA class I antigens
fresh frozen plasma corrects def in
clotting factors
cryoprecipitate is precipitate that forms when
fresh frozen plasma is thawed
cryoprecipitate contain lots of
fibrinogen
acute hemolytic transfusion reaction
preformed antibodies to donor RBCs
acute hemolytic transfusion reaction is what type of hypersensitivity reaction
type II
acute hemolytic transfusion reaction is usually from
incorrect blood product
sxs of acute hemolytic transfusion reaction
fever, chills, flank pain, jaundice, dark urine
anaphylaxis is a
allergic type I sensitivity reaction
anaphylaxis sxs
hives, angioedema, wheezing, and hypotension
anaphylaxis may occur in
IgA def individuals
febrile non-hemolytic transfusion reaction sxs
fever, chills, and no other systemic sxs
febrile non-hemolytic transfusion reaction caused by
cytokines in blood products esp IL-1
transfusion related acute lung injury results from
neutrophil activation