Necrosis - tissue death
Myocardial Infarction definition: - The development of ischemia with resultant necrosis of the myocardium caused from prolonged obstruction of the coronary arteries depriving the heart muscle of oxygen
Importance of oxygen in the body - reduces acidity
When do...
Myocardial Infarction definition: - The development of ischemia with resultant necrosis of the
myocardium caused from prolonged obstruction of the coronary arteries depriving the heart muscle of
oxygen
Importance of oxygen in the body - reduces acidity
When do most MI occur - between thanksgiving and new years because of all of the stress
Acute Myocardial infarction caused by - sudden thrombotic occulusion of a coronary artery
Acute Myocardial infarction occurs - at the site of an atherosclerotic plaque that has become unstable
due to a combination of ulceration, fissuring and rupture.
thrombosis - blood clot composed of platelets
Congestive heart failure occurs 25% of the time when - left ventricle is infarcted
ST-Segment Elevation is indicative of - MI
ST-Segment depression is indicative of - ischemia and angina
Most patients who sustain an MI have - coronary atherosclerosis.
A thrombus can become a - embolus
, Plaque rupture is believed to be the triggering mechanism for the development of a - thrombus
The thrombus formation occurs most often at the site of an - atherosclerotic lesion, thus obstructing
blood flow to the myocardial tissues.
80 - 90% of all MIs are derived from a - coronary thrombus
People with diabetes are more prone to - thrombus/embolus
What happens to a part of the body when ischemic? - inflammatory reaction, edema, platelet
aggregation, necrosis
Myocardium receives its blood supply from - 2 large coronary arteries and their branches
Most common site of MI - Left ventricle
Zone of infarction - region of ischemic damage
Ischemia and reperfusion injury is accompanied by an inflammatory response
Immediately surrounding the zone of infarction is a region called the - zone of hypoxic injury
What zone is reversible if blood perfusion is reestablished - Zone of Ischemia
MIs can be located in the - anterior, septal, lateral, posterior, or inferior walls of the left ventricle.
What factors determine the size of the resulting MI? - extent or severity of the ischemic episode, size of
vessel, amount of circulation, vascular tone, metabolic demands of the myocardium
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller otebamanyuru. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £4.31. You're not tied to anything after your purchase.
