What is coronary artery disease causing SCD?

80% of people with SCD have CAD due to atherosclerotic coronary arteries. Non atherosclerotic coronary artery disease are found in little number of SCDs include coronary arteritis, embolism, dissection, congenital malformation (left coronary artery from pulmonary artery/ from right coronary artery/...) No specific pattern of CAD causing CSD, acute occlusion of minimally stenosed coronary artery can result in disasterous outcome more than severely stenosed coronary artery with jeopardized myocardium protected by collaterals.