Myocardial Infarction

Question 1

MI

Answer 1

sustained ischemia causing irreversible cell death

Question 2

What is the most common cause

Answer 2

thrombus formation

Question 3

What determines the effect on CO

Answer 3

the degree of damage to myocardium walls

Question 4

s/s

Answer 4

chest pain >20 minutes, crushing pain, chest heaviness, feeling of doom, jaw/shoulder/epigastric pain, fatigue, N/V, SOB

Question 5

Initial management

Answer 5

12 lead EKG, nonenteric coated aspirin, oxygen, get IV access to pull cardiac marker labs

Question 6

Why is oxygen used as treatment

Answer 6

to increase oxygen getting to ischemic myocardium

Question 7

Why is aspirin used as treatment

Answer 7

to diminish platelet aggregation

Question 8

Nitroglycerin

Answer 8

fast acting vasodilator to decrease preload, afterload, and myocardial demand

Question 9

Morphine

Answer 9

vasodilator to decrease workload, 204mg Q5min

Question 10

Heparin (IV)

Answer 10

slows down clotting process, monitor platelets and PTT, initial bolus with continuous rate

Question 11

Diagnostic tests

Answer 11

exercise stress test and pharmacological stress test to look for altered myocardial tissue perfusion

Question 12

Restorative interventions

Answer 12

thrombolytic therapy, fibrinolytic system activation, reperfusion