myocardial ischemia

Question 1

what is myocardial ischemia

Answer 1

occurs when blood flow to the myocardium is obstructed by a partial or complete blockage of a canary artery by a buildup of plaque (atherosclerosis)

Question 2

difference between ischemia and infarction

Answer 2

ischemia decreases blood flow causing hypoxia

infarctions cut off blood flow causing necrosis

Question 3

what is athleroscrosis

Answer 3

thickening and hardening of the arteries caused by a buildup of plaque in there inner lining of the artery

Question 4

how is athlersclrosis treated long term

Answer 4

with antiplatlets, anticoagulants, statins and anti-hypertensives

Question 5

why dose athlescrosis occur

Answer 5

chronic endothelial injury or stress, leading to fats accumulate in the wall of the artery, then there is inflammation and plaques hardening of the lining of the vessel

Question 6

the buildup of athloscrosis leads too

Answer 6

core of the plaque becoming necrotic and rupturing causing a blockage in a vessel

Question 7

treatment of myocardial ischemia

Answer 7

1. 12 lead
2. 300mg aspirin
3. 0.4 mg GTN every 5 mins if reduces symptoms. 10 mins if caution
4. IV access if required (poor perfusion, dysrhythmia ect.)

5.repeat 12 lead in 15-30 mins post first

Question 8

role of aspirin in myocardial ischemia

Answer 8

stops althrosclerosis from further building and inhibits an inflammatory response

Question 9

role of GTN in myocardial ischemia

Answer 9

reduces 02 demand, thus ischemia and dilates artery allowing more blood to pass

Question 10

difference between angina and MI

Answer 10

angina is the result of narrowed (rather than blocked) coronary arteries