Influence of Position on Detection of Patent Foramen Ovale by Simultaneous Transesophageal Echo and Transcranial Doppler

Influence of Position on Detection of Patent Foramen Ovale by Simultaneous Transesophageal Echo and Transcranial Doppler

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.

Inclusion Criteria:

• Patients needing a TEE evaluation to rule out a cardiac source of brain emboli

Exclusion Criteria:

• Patients unable to comply with protocol requirements
• Patients unable or unwilling to sign informed consent