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J Thorac Cardiovasc Surg 2008;136:1391-1392
© 2008 The American Association for Thoracic Surgery

Letter to the Editor

Solid and gaseous cerebral microembolization after biologic and mechanical aortic valve replacement: Investigation with multirange and multifrequency transcranial Doppler ultrasound

St George's Hospital, London, United Kingdom

The first 20% of the full text of this article appears below.

To the Editor:

We read with interest the recent article by Guerrieri Wolf and colleagues¹ describing their experience of a transcranial Doppler system (Embo-Dop; DWL Elektronische Systeme GmbH, Singen, Germany) to discriminate between gaseous and particulate emboli after aortic valve replacement. The main finding of their study was that solid microemboli occurred more frequently after mechanical aortic valve replacement compared with biological valve replacement at 3 months after surgery. The inability to distinguish the difference between solid and . . . [Full Text of this Article]