3 Basic pathological changes 1 Alteration: degeneration, necros/s 2 Exudation: escape of fluid and cells from vessels e into injured tissue due to permeability ity increasing 3 Proliferation
3 Basic pathological changes 1 Alteration: degeneration, necrosis 2 Exudation: escape of fluid and cells from vessels into injured tissue due to permeability increasing. 3 Proliferation
1) Serum, differs from transudate which occurs in conditions where intravascular pressure increases, intravascular osmotic pressure decreases. vascular permeability does not increase
1) Serum, differs from transudate which occurs in conditions where intravascular pressure increases, intravascular osmotic pressure decreases, vascular permeability does not increase
Exudate Transudate Appearance opaque clear Sp gravity >1.020 <1.020 Protein rich >2.5g% 0oor<2.5g% ce∥s more few >500/mm. Neu.+ <500/mm Neu Coagulability Rivata test
Exudate Transudate Appearance opaque clear Sp. gravity >1.020 <1.020 Protein rich >2.5g% poor<2.5g% Cells more few >500/mm,Neu.+ <500/mm Neu. – Coagulability + _ Rivata test + _
2) Fibrin Transformed from fibrinogen in blood 3)Cells: neutrophils, monocytes, Lymphocytes, eosinophils. Red cells amay also leave vessels. but this rprocess is passive due to endothelium injured and Intravascular hydrostatic pressure increased
2) Fibrin Transformed from fibrinogen in blood 3) Cells: neutrophils, monocytes, lymphocytes,eosinophils. Red cells may also leave vessels, but this process is passive due to endothelium injured and intravascular hydrostatic pressure increased
The process of exudation is as fo∥owWs 1 changes of vascular caliber and flow a) Transient arteriolar contraction b) Arteriolar dilatation within 30 min c) Blood flow slowing and stasis, leukocytic margination and adhesion
The process of exudation is as follows: 1 changes of vascular caliber and flow a) Transient arteriolar contraction: b) Arteriolar dilatation within 30 min. c) Blood flow slowing and stasis, leukocytic margination and adhesion