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2 Cards in this Set
- Front
- Back
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Angina Pectoris
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transient myocardial ischemia 15sec-15min without cell necrosis
3 patterns stable/typical-from chronically stenosed coronary artery, responds to rest and nitrogylcerin Prinzmetal/variant-due to spasm of coronary artery, responds to nitroglycerin and calcium channel blockers unstable/crescendo-progressive increase in frequency and duration with disruption of plaque and partial thrombosis, leads to acute MI |
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myocardial infarction
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heart attack
death of cardiac muscle due to ischemia can be transmural vs subendocardial transmural-full thickness usually involving 1 coronary artery LAD 40-50%, RCA 30-40%, LCA 15-20% Subendocardial-inner 1/3rd of ventricular wall involved due to plaque disruption and thrombosis, non-occlusive or secondary to hypotension 90% are due to plaque change and 10% to vasospasm 15-30% involve left and right ventrical, almost none involve only right |
