<prompt> Most common cause of embolic stroke is -Intra-Cardiac ThrombiParticulate matter from IV drug injectionsProtein C deficiencyAntiphospholipid syndrome  <response>: Ans. is a i.e., Intra-Cardiac Thrombi o The most common cause of embolic strokes are Intra-cardiac Thrombi.o The most common sources of systemic embolism and embolic stroke are Intra-cardiac thrombiformed as a result of atrial fibrillation, ST-elevation Ml, left ventricular dysfunction or heart failure. 