Value of Transcranial Doppler Sonography in Patients Treated with Nimodipine
For more than 8 years, transcranial Doppler sonography (TCDS) has been an important noninvasive tool in detecting vasospasm after subarachnoid hemorrhage (SAH). While initial investigations found a good correlation between the evaluated flow velocities and the neurological status, recent reports were more reserved. Especially the predictive value of TCDS concerning imminent delayed ischemic deficits (DID) was doubted [12, 14, 15]. This fact was mainly due to extremely high flow velocities being tolerated without any neurological deficit.
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