Hemodynamics Part I: Hyperemia and Congestion Flashcards Preview

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Flashcards in Hemodynamics Part I: Hyperemia and Congestion Deck (10):
1

define hyperemia

active process in which arteriolar dilation results in increased flow of blood to a tissue

2

examples of hyperemia

skeletal muscle during exercise

inflammation

blushing

3

why is tissue red with hyperemia?

erythematous due to engorgement with oxygenated blood

4

passive hyperemia

congestion

5

define congestion

passive process due to impaired outflow of blood from a tissue

6

what color is congestion?

blue-red coloration due to accumulation of deoxygenated hemoglobin (cyanosis)

7

True or false: you can have both congestion and edema

true

congestion and edema commonly occur together

8

differentiate between alveolar and chronic pulmonary congestion on microscopic level

acute: alveolar capillaries engorged with blood, alveolar septal edema, focal intraalveolar hemorrhage

chronic: thickened and fibrotic septa, heart failure cells

9

"nutmeg liver"

chronic hepatic congestion

central regions of hepatic lobules are grossly red/brow and depressed due to cellular loss surrounded by unaffected areas

10

what does a liver with chronic hepative congestion look like microscopically

centrilobular necrosis and if long standing, hepatic fibrosis