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22 Cards in this Set

  • Front
  • Back
First 2-4 hours
No visible change
First 1-2 hours
Contraction bands
After 4 hours
Early coagulative necrosis
When do PMNs begin to emigrate?
After 4 hours
When is accute inflammation at its peak?
From 2 to 4 days after the MI
When is hyperemia seen?
From 2 to 4 days after the MI
When does muscle show massive coagulative necrosis?
From 2 to 4 days after the MI
When does a hyperemic border appear?
From 5 to 10 days after the MI
When does the heart become soft and yellow-brown?
From 5 to 10 days after the MI
When is there greatest risk of rupture (of the wall, papillary muscles, or ventricular septa)?
From 5 to 10 days after the MI
What causes risk of rupture in post-MI patients?
Macrophages degrading structural components
What is the outer zone and when is it seen?
It is an ingrowth of granulation tissue that appears betwee 5 and 10 days after the MI
When does the artery recanalize?
7 weeks after the MI
When is the contracted scar complete?
7 weeks after the MI
What are the 1st, 2nd and 3rd most common sites for coronary artery occlusion?
LAD > RCA > circumflex
When is risk of ventricular aneurysm greatest?
7 weeks after the MI
When is risk of arrhythmia greatest?
From 2 to 4 days after the MI
When does Dressler's syndrome occur?
Several weeks post-MI
When does fibrinous pericarditis occur?
3-5 days post-MI; or several weeks post-MI due to Dressler's syndrome, an autoimmune fibrinous pericarditis
What are possible complications of MI?
Arrhythmia, LV failure, pulmonary edema, shock; rupture leading to tamponade, severe MR, VSD; aneurysm leading to decreased CO, risk of arrhythmia, embolus from mural thrombus; fibrinous pericarditis; Dressler's syndome (autoimmune)
What is the best marker for MI?
Troponin. It rises early (4 hours post-MI) and stays elevated (7-10 days), and is specific to the heart
Causes of dilated (congestive) cardiomyopathy
Chronic alcohol, wet Beriberi, Coxsackie B virus myocarditis, chronic cocaine use, Chaga's disease, doxorubicin toxicity, peripartum cardiomyopathy

"A,B,C,C,C,D"