Acute and Chronic Inflammation Flashcards
5 triggers of inflammation
foreign body infection ischaemia/infarction physical/chemical injury immune reactions
the rapid host response to acute inflammation triggers what 2 reactions
vascular and cellular
what are the 3 vascular changes that maximise the movement of plasma proteins to the site of injury
vasodilation, increased permeability and blood stasis
the main aim of inflammation
recruit leucocytes to area of damage
what 2 leukocytes ingest and kill bacteria and necrotic cells
neutrophils and macrophages
what is it called when red blood cells flow in the centre of vessel lumen and WBCs flow peripherally
margination
what is secreted by injured cells to encourage the adhesion of leukocytes to the endothelium
cytokines
what is transmigration
when the leukocyte is then encouraged to pass through endothelium to extravascular space
what stimulates the migration of leukocytes towards the chemical concentration gradient
chemokines
3 things chronic inflammation is caused by
persistent infection
immune mediated inflammation
prolonged exposure to toxic agent
what do granulomas do
attempt to contain offending agent it cannot eradicate
the 5 clinical signs of inflammation
redness heat swelling pain loss of function
tachycardia, fever, hypotension, raised WCC and raised CRP are symptoms of what
inflammation
what are the 4 possible outcomes of acute inflammation
complete resolution
healing by fibrosis (scar)
abscess
chronic inflammation
chronic inflammation can develop from acute inflammation but it is usually due to
persistent infection
prolonged exposure to toxins
autoimmune reactions