Modification of Hart's classification of echocardiographic findings
| Major risk factors | Minor risk factors |
|---|---|
| Abnormalities on transoesophageal echocardiography (TEE) that are potential cardiac sources of embolism are listed as major or minor risk factors. Atrial fibrillation, acute myocardial infarction, and prosthetic valve are also major risk factors but not listed here because they can be identified without TEE. | |
| Left atrial cavity thrombus | Mitral valve prolapse |
| Left atrial appendage thrombus | Mitral annular calcification |
| Left ventricular thrombus | Calcified aortic stenosis |
| Aortic thrombus | Patent foramen ovale |
| Atrial myxoma | Slow flow (spontaneous echo contrast) |
| Vegetation | Atrial septal aneurysm |
| Infective endocarditis | Left ventricular aneurysm |
| Marantic endocarditis | Aortic aneurysm |
| Dilated cardiomyopathy | False tendon |
| Mitral valve stenosis | Aortic arch plaques |