Myocardial infarction is caused by: (AIPG 2010)
|A||Coronary atherosclerosis with rupture of atheromatous plaque|
|B||Haemorrhage into an atheromatous plaque in the coronary artery|
|D||Any of the above|
a. Etiopathogenesis of myocardial infarction
i. Diminished coronary blood flow (CAD) ii. Increased myocardial demand (exercises, emotion)
iii. Hypertrophy of the heart (hypertension) iv. Rupture of atherosclerotic plaque
v. Superimposed coronary thrombosis vi. Intramural haemorrhage
vii. Coronary vasospasm, embolism, thrombotic disease.
b. Transmural infarct are the most common type and seen in more than 95% of cases.