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A Comparison of Transesophageal Echo & Transcranial Doppler with Contrast Medium for Detection of Patent Foramen Ovale Stroke 25:1265-1267, Jauss,M.,et al, 1994 See this aricle in Pubmed Article Abstract We performed TCD and transesophageal echocardiography simultaneously in 50 patients using galactose microbubbles.We observed bubble signals passing in the middle cerebral artery in 7 patients less than 20 seconds after injection;we found positive TCD tests in 14 patients using the Valsalva maneuver.With transesophageal echocardiography patent foramen ovale could be detected in 15 patients(sensitivity,0.93;specificity,1;P<.01).TCD with echo contrast is a reliable screening tool for patent foramen ovale.A standardized procedure including the Valsalva maneuver is essential to prevent false-negative results.

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(click to filter results - removes previous filter) doppler doppler,transcranial echocardiogram echocardiogram,contrast echocardiogram,transesophageal patent foramen ovale

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