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Cardiogenic emblism is frequently an uncertain diagnosis merely inferred by finding a potential cardiac source.Transthoracic echocardiography has had a low yield in screening unselected patients with stroke.Several series of patients with stroke have been reported comparing transthoracic and transesophageal echocardiography.Potential cardiac sources of embolism were consistently identified in many mre patients by transesophageal echocardiography.Many findings are,however,of uncertain significance;these include spontaneous echo contrast,patent foramen ovale,filamentous strands on the mitral valve,and atrial septal aneurysm.Transesophageal echocardiography is most helpful in patients with stroke who are less than 45 years of age and in those without clinical evidence of heart disease. The indications for its use in the evaluation of stroke remain controversial.Further studies are needed using transeophageal echocardiography in patients with stroke and in control groups,not only to determine the antural history of transesophageal,echocardiographically detected abnormalities but also to evaluate treatment options. |
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algorithm
cerebral embolism
cerebral embolism,cardiac origin
cerebrovascular accident
cerebrovascular accident,work up for
cerebrovascular accident,young adult
echocardiogram
echocardiogram,transesophageal
embolism
review article
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