Post-Mi occurrences Flashcards
complications 0-4 hrs post MI (4)
- arrhyhtmia
- HF
- cardiogenic shock
- death
complications 12-24hrs post MI (4)
- arrhythmia
- HF
- cardiogenic shock
- death
what are the time brekadowns of post-MI? (6)
- 0-4 hrs
- 4-12 hrs
- 12-24 hrs
- 1-3 days
- 3-14 days
- 2wks to several months
when does early coagulative necrosis start?
4-12 hrs
what does neutrophil migration start?
12-24 hrs
what causes contraction bands?
why?
reperfusion injury 2/2 free radical damage
complications 1-3 days post-MI (1)
fibrinous pericarditis
when do you see extensive coagulative necrosis w/tissue surrounding infarct with neturophils around it
1-3 days
when do you see macrophages and granulation tissue at margins?
3-14 days
complications 3-14 days post MI (4)
- free wall rupture –> tamponade
- papillary muscle rupture –> MR
- IV septal rupture 2/2 macrophage degradation
- LV pseudoaneursym
what’s a LV pseudoaneurysm
mural thrombus plugs hole in myocardium … it’s a time bomb
when is the contracted scar complete?
- what does heart look like grossly at this point?
2 wks to several months
- gray-white
complications 2wks - several months post-MI (4)
- Dressler syndrome
- HF
- arryhtmia
- true ventricular aneurysm
what’s Dressler syndrome
autoimmune pericarditis
microscope changes 0-4 hrs post MI
nothing
