Transplant and Lab Flashcards
Direct Coombs tests:
Anti-Rh Ab bound to infant RBC
Hyperacute rejection mechanism and Pathogenesis
Complement activation, endothelial damage, inflammation and thrombosis
Alloantigen and Circulating alloantigen specific Ab
Acute rejection mechanism and pathogenesis
Parenchymal cell damage, interstitial inflammation
Endothelialitis
Graft-vs-Host disease
When any mature T cell remaining in the BM can attack allogeneic MHC-bearing cells of the recipient and cause widespread epithelial cell death
Rash, Jaundice, diarrhea, and GI Hemorrhage
Isograft
Transplanted between genetically identical individuals
Latex bead agglutination is used to Dx:
Cerebrospinal infections of:
- Haemophilus
- Pneumococcus
- Meningococcus
- Cryptococcus neoformans
What increases the expression of MHC 2 on graft
IFN-γ
Xenogeneic graft
Between members of different species
Routine HLA Typing focuses on
HLA-A
HLA-B
HLA-DR
Fluorescent Ab Tests used to Dx:
- RSV
- Herpes 1 and 2
- Pneumocystis
Indirect fluorescent antibody test identfies
Abs in the pt
Autograph
Tissue is moved from one location to another in the same individual
Chronic rejection mechanism and pathogenesis
Chronic DTH reaction in vessel wall
Intimal smooth muscle cell proliferation
vessel occlusion
Indirect Coombs tests:
Used to identify Rh-negative mother who are producing anti-Rh Ab of the IgG isotype
Allogeneic graft
between genetically different members of the same species