ischaemic heart disease

Question 1

what are the 4 types of coronary syndromes for ischaemic heart disease?

Answer 1

• angina pectoris-
• acute myocardial infarction
• chronic IHD with CHF
• sudden cardiac death

Question 2

obstruction of more than 70% of vessel leads to critical stenosis. T/F

Answer 2

TRUE

Question 3

What is a fixed stenosis?

Answer 3

occludes 90% or more of a vascular lumen can lea to inadequate coronary blood flow with symptoms even at rest

Question 4

what is collateral perfusion?

Answer 4

remodelling of the artery may compensatory blood flow at area of risk when atherosclerotic lesion progressively occludes a coronary artery at a sufficiently slow rate over year

Question 5

which cells interact leading to atherosclerosis?

Answer 5

endothelial cells and circulating leukocytes resulting in t cell and macrophage recruitment and activation

Question 6

what is a transmural infarction?

Answer 6

ST elevation-STEMI-involves full thickness of the ventricle caused by epicardial vessel occlusion through combo of chronic atherosclerosis and acute thrombosis

Question 7

subendocardial infarction?

Answer 7

MIs limited to the inner third of myocardium-these infarcts don’t exhibit ST-segment elevations or Q waves on the ECG tracing