Major risk sources Minor risk sources
Atrial fibrillation Patent foramen ovale
Prosthetic heart valves Atrial septal aneurysm, recent
Myocardial infarction Spontaneous echo contrast
Intracardiac thrombus Mitral valve prolapse
Mitral stenosis Mitral annular calcification
Atrial myxoma Calcific aortic stenosis
Dilated cardiomyopathy (EF ,35%) Ventricular akinesia (EF .35%)
Left ventricular aneurysm
Infective endocarditis
Abbreviation: EF, ejection fraction