Huang JJ, et al. - Researchers explored the proposition that atrial flutter would encompass indicators of less risk for thromboembolism compared with atrial fibrillation on transesophageal echocardiography (TEE); thereby possibly causing a lower stroke risk. A lower incidence of left atrial appendage thrombi, higher left atrial appendage emptying velocity (LAAEV) and less left atrial spontaneous contrast was reported in patients with atrial flutter than with atrial fibrillation patients. This data indicated a lower risk for potential arterial thromboembolism.