Prolonged transcranial Doppler monitoring after aneurysmal subarachnoid hemorrhage fails to adequately predict ischemic risk.

2011 
Background Stroke is common after aneurysmal subarachnoid hemorrhage (aSAH). Transcranial Doppler ultrasound (TCD) monitoring is often employed to identify vasospasm and allow intervention to avoid infarction. The required duration of monitoring has not been established. We aim to determine if 10 days of TCD monitoring identifies all patients at risk for infarction.
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