Transcranial Doppler ultrasound for assessment of dynamic cerebral autoregulation in patients with acute ischemic stroke / 国际脑血管病杂志

ABSTRACT

Transcranial Doppler (TCD) is a method for measuring cerebral artery blood flow velocity, which has the advantages of low cost, non-invasive, high temporal resolution. Dynamic cerebral autoregulation (dCA) is to study the instantaneous change of cerebral blood flow (CBF) at the moment of arterial blood pressure or intracranial pressure change, that is, the ability to recover CBF in the face of sudden change of perfusion pressure. After the onset of acute ischemic stroke (AIS), effective dCA can maintain the stability of cerebral hemodynamics and avoid excessive or insufficient perfusion at the injured site. Therefore, it is of great significance to evaluate dCA in patients with AIS. However, at present, there is no recognized optimal evaluation method for dCA. This article mainly summarizes the advantages of TCD in evaluating dCA compared with other methods and the application of TCD combined with transfer function analysis (TFA) in evaluating dCA in AIS.