Etiology | Number (%) |
Cardiac | 35 (74%) patients |
Arrhythmia | 25 |
Valvular disease | 4 |
Post-myocardial infarction | 6 |
Extra-cardiac disease | 8 (17%) |
Aortic arch atherosclerosis | 6 |
Abdominal aortic atherosclerosis. | 2 |
No cause was identified | 4 (9%) |