Study Status: Completed
Recruit Status: Unknown status
Study Type: Observational
Official Title: Influence of Position on Detection of Patent Foramen Ovale by Simultaneous Transesophageal Echo and Transcranial Doppler
Brief Summary: Patients will have simultaneous Transesophageal Echo (TEE) and Transcranial Doppler (TCD) performed and a comparison of timing, sensitivity and intensity of intravenously injected bubbles will be determined.