Inflammation Flashcards
Hallmark of acute inflammation
Increased vascular permeability
Stimuli of acute inflammation
Infx
Necrosis
Foreign bodies
Immune rxns
Mediators that are rapidly secreted by granule exocytosis; synthesized de novo
Cell-derived mediators
Mediators that are produced by the liver (e.g. complements)
Plasma-derived mediators
Specific gravity of an exudate
> 1.012
5 steps of leukocyte extravasation
1) Margination
2) Rolling
3) Tight binding
4) Diapedesis
5) Chemotaxis/ migration
Most common exogenous stimuli for chemotaxis
Bacterial products
Mediators assoc w/ vasodilation
Histamine
Prostaglandins
NO
Primary acute phase mediators in systemic inflamm (fever)
IL-1
TNF
Conditions that present w/ inc ESR
Infx Inflamm Cancer Pregnancy SLE
Conditions that present w/ dec ESR
Sickle cell anemia
Polycythemia
CHF
Morphologic patterns of acute inflammation
Serous Fibrinous Suppurative Ulcerative Pseudomembranous
Outpouring of thin fluid derived from plasma or mesothelial cells
Serous inflammatiom
Biochem d/o presenting w/ skin blisters d/t photosn
Porphyria
Most common variant of porphyria and its deficient enzyme
Porphyria cutanea tarda (URO decarboxylase)
Inflammation w/ bread-and-butter appearance (fibrin deposited in extracellular space)
Fibrinous inflammation
Pericarditis after MI; presents w/ pericardial effusion, chest pain, and fever
Dressler syndrome
Inflammation that presents w/ purulent exudate and abscess
Suppurative inflammation
Inflammation involving sloughing off of necrotic tissue
Ulcerative inflammation
Most common complication of PUD
Bleeding
BV affected in gastric ulcer
left gastric artery
BV affected in duodenal ulcer
Gastroduodenal a.
Inflammation involving bacterial toxin-induced damage of tissue
Pseudomembranous inflammation
Conditions w/ pseudomembranous inflammation
Esophageal candidiasis
Pseudomembranous colitis
Diphtheria