Microembolic signals in transcranial Doppler and the functional outcome of patients with acute ischemic stroke: a meta-analysis - Takeaways - MDSpire
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Transcranial Doppler Detection of Microembolic Signals and Their Prognostic Impact on Functional Outcomes in Acute Ischemic Stroke: A Meta-Analysis

  • By

  • Jun Qiao

  • Zhikun Zhang

  • Yujin Feng

  • Yi Wang

  • September 10, 2026

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  • 1

    Transcranial Doppler ultrasonography can detect microembolic signals (MES), which indicate ongoing cerebral embolization in acute ischemic stroke patients.

  • 2

    A meta-analysis of 13 cohort studies with 1,777 patients found that MES presence significantly correlates with poor functional outcomes after acute ischemic stroke.

  • 3

    The odds ratio for poor functional outcomes associated with MES was 2.85, indicating a strong association without significant heterogeneity among studies.

  • 4

    Subgroup analyses showed consistent results across different study designs and patient characteristics, with no significant modifiers of the association.

  • 5

    Further research is needed to confirm the independent prognostic value of MES beyond established clinical and imaging predictors in acute ischemic stroke.

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