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Transcranial Doppler Ultrasound Identifies patients with Right-to-Left Cardiac or Pulmonary Shunts Neurol 41:1902-1904, Chimowitz,M.I.,et al, 1991 See this aricle in Pubmed Article Abstract We performed transcranial Doppler ultrasound(TCD)and transeophageal contrast echocardiography simultaneously in four patients.In one patient with a patent foramen ovale and another patient with pulmonary A-V fistulae,we detected micro air bubbles in the right middle cerebral artery three to five cardiac-cycles after their appearance in the left atrium following intravenous injection of contrast.In two patients without right- to-left shunts,we did not detect air bubbles in the left atrium or middle cerebral artery following injection of contrast.These results show that TCD can identify patients with right-to-left cardiac or pulmonary shunts.

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(click to filter results - removes previous filter) doppler doppler,transcranial echocardiogram echocardiogram,contrast echocardiogram,transesophageal embolism,paradoxical fistula,arterio-venous fistula,arterio-venous,pulmonary right-left cardiac shunt ultrasonography

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