post-MI

Question 1

2-4 d post MI

Answer 1

mottling w/ yellow-tan softening

risk for arrythmia

Question 2

5-10 d post MI

Answer 2

hyperemic border, central yellow-tan softening

risk for free-wall rupture

Question 3

10 d - 2 wk post MI

Answer 3

depressed, soft, infarct borders, gelatinous appearance

Question 4

2-8 wk post MI

Answer 4

gray-white scar, progressive from border to center of infarct

risk for ventricular aneurysm

Question 5

1/2 - 24 h post MI

Answer 5

wavy fibers, coagulative necrosis, myocyte eos, edema, hemorrhage, contraction band

Question 6

2-4 d

Answer 6

coagulative necrosis w/ loss of nuclei and striations, interstitial infiltrate of PMNs

Question 7

5-7 d

Answer 7

beginning disintegration of dead myofibers with dying PMNs, macrophages w/ phagocytosis of dead cells

Question 8

7-10 d

Answer 8

well-developed phagocytosis of dead cells early formation of fibrovascular granulation tissue at margins

Question 9

2-8 wks

Answer 9

well-established granulation tissue with new blood vessels and inc collagen deposition w/ dec cellularity