Time period required for transcranial Doppler monitoring of embolic signals to predict recurrent risk of embolic TIA and stroke from arterial stenosis

Background and Purpose: We aimed to investigate whether the time period of transcranial Doppler monitoring for embolic signals can be reduced without loss of clinical yield compared to routinely performed one-hour monitoring. Methods: Investigations based on 86 patients (55 men, 31 women; mean age, 60.6 years) with a non-disabling arterio-embolic ischemic event in the anterior circulation within the last 30 days (mean, 7.3) and an ipsilateral medium-grade or high-grade stenosis of the carotid or middle cerebral artery. Patients underwent one-hour monitoring for embolic signals and were followed up prospectively…