Routine transesophageal echocardiography for cerebral ischemia. Is it really necessary?

Background: Patients presenting with stroke or transient cerebral ischemic episodes often undergo transesophageal echocardiography (TEE) as part of their initial evaluation. Previous studies have demonstrated that TEE is superior to transthoracic echocardiography for the detection of potential cardiac sources of embolism. In our institution, this scenario now represents the most frequent reason for requesting TEE.