MI

Question 1

most commonly blocked coronary arteries

Answer 1

left anterior descending(supplies blood to anterior and septum of the left ventricle)

right coronary artery (accounts for posterior, septum, and papillary muscle of LT ventricle)

left circumflex artery (lateral wall of the left ventricle)

Question 2

subendocardial infarct

Answer 2

If the blockage suddenly lyses or breaks down and blood flow returns, sometimes patients’ damage will be limited to the inner third

Question 3

NSTEMI

Answer 3

subenocardial infacrt, hypotension, atherosclerosis

Question 4

NSTEMI

ST elevation or ST depression

Answer 4

ST depression

Question 5

transmural infarct

Answer 5

STEMI, full was thickness damage and complete block

Question 6

MI symotms

Answer 6

CP
left arm or jaw pain
diaphoresis
nausea
dyspnea
fatigue

Question 7

MI diagnosis

Answer 7

EKG ST elevation
Troponin elevation (2-4 hrs peak)
CK-MB (peaks 2-4 hours but returns to normal after 24 hours; useful to detect 2nd infarct)

Question 8

MI Complications

Answer 8

cardiogenic shock
arrhythmias
pericarditis (1-3 days after)

Question 9

MI treatment

Answer 9

fibrinolytic therapy
angioplasty
percutaneous coronary intervention

Question 10

four primary indicators for MI

Answer 10

PT HX
CM
abnormal EKG
elevation in specific cardiac protein markers