Term
What is the pathology of an MI after
30 minutes to 4 hours? |
|
Definition
Gross: None
Micro: Wavy fibers at borders |
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Term
What is the pathology of an MI after
4-12 hours? |
|
Definition
Gross: Mottling
Micro: Necrosis, edema, and hemorrhage |
|
|
Term
What is the pathology of an MI after
12-24 hours? |
|
Definition
Gross: Mottling RED-BLUE
Micro: PYKNOSIS- shrinking of nucleus, hypereosinophilia, FEW neutrophils |
|
|
Term
What is the pathology of an MI after
1-3 days? |
|
Definition
Gross: Yellow-tan Center
Micro: Neutrophils; loss of nuclei and striations |
|
|
Term
What is the pathology of an MI after
3-7 days? |
|
Definition
Gross: Hyperemic Border, central yellow-tan softening
Micro: PHAGOCYTOSIS at borders, disintegration of myofibers and dying neutrophils |
|
|
Term
What is the pathology of an MI after
7-10 days? |
|
Definition
Gross: Depressed red-tan margin, soft yellow-tan center
Micro: Early GRANULATION TISSUE; widespread PHAGOCYTOSIS |
|
|
Term
What is the pathology of an MI after
10-14 days? |
|
Definition
Gross: Depressed red-gray borders
Micro: GRANULATION TISSUE; neovascularization and collagen |
|
|
Term
What is the pathology of an MI after
2-8 weeks? |
|
Definition
Gross: Gray-white scar
Micro: Collagen deposition, less cellular |
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