Term
| What type of MI is more likely to involve multiple coronary arteries |
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Definition
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Term
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Definition
| Plaque Disruption-> Platelet Adhesion/Aggregation-> Thromboxane A2-> Vasospasm and Clotting Activation-> Thrombus and Occlussion |
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Term
| MI Micro observations at: 1/2-4 hrs, 4-12 hrs, 12-24 hrs, 1-2 days, 3-7 days, 7-10 days, 10-14 days, 2-8 wks |
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Definition
1/2-4: Wavy Boarder fibers
4-12: Hemorage, Edema, Necrosis
12-24: Pyknosis, Eosinophilia
1-3: Max PMNs
3-7: Boarder Phagocytosis
7-10: Early Granulation Tissue
10-14: Late Granulation
2-8 wks: Collagen Deposition |
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Term
| What type of tissue will stain with TTC |
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Definition
| Normal tissue, Abnormal is unstained |
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Term
| Gross MI observations at: 1/2-4 hrs, 4-12 hrs, 12-24 hrs, 1-2 days, 3-7 days, 7-10 days, 10-14 days, 2-8 wks |
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Definition
1/2-4: Nothing
4-12: Mottling
12-24: Mottling Red-Blue
1-3: Yellow-Tan
3-7: Hyperemic Boarder
7-10: Depressed, Red-Tan Boarder
10-14: Depressed, Red-Brown Boarder
2-8 Wks: Grey White Scar |
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Term
| How do you indetify reperfusion injury microscopically |
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Definition
| Contraction Band Necrosis |
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Term
| Possible complications of Ventricular rupture and when is it most likely to happen |
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Definition
Papillary Muscle: Mitral Regurg
Septa: Left-right Shunt
Free wall: Hemopericardium
Mostly likely 3-7 days post MI |
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Term
| How can an MI make you more suseptible to thrombosis |
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Definition
Area of MI generates more blood stasis
MI generates Endocardial damage |
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Term
| Where is the heart vulnerable to Aneurysm |
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Definition
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Term
| What is the difference between expansion and extension of an area of infarcted myocardium |
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Definition
Expansion: weakening and stretching of fibers
Extension: Additional infarction enlarging the leasion |
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Term
| Where does the endothelium derive its oxigen from |
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Definition
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Term
| Describe the characteristics of a person with the worst prognosis post MI |
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Definition
| Elder diabetic women who had an MI before |
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Term
| Why is ischemia worse than hypoxemia |
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Definition
| Toxic metabolites cannot be cleared in ischemia |
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Term
| What area of the heart is the least perfused? |
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Definition
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Term
| What is the most common mechanism of sudden cardiac death? |
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Definition
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Term
| What is the most common morpholgy of the heart in a patient that died of a lethal arrhythmia? |
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Definition
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