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Two-vessel Occlusion Mouse Model of Cerebral Ischemia-reperfusion

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Infarction Patterns and Recurrent Adverse Cerebrovascular Events in Moyamoya Disease.

Shao-Chen Yu^1,2, Zi-Han Yin^1,2, Chao-Fan Zeng^1,2

¹Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.

Disease Markers

|April 8, 2022

Summary

For moyamoya disease patients, multiple acute infarctions on DWI indicate a higher risk of recurrent cerebrovascular events after surgery. Early detection and intervention are crucial for managing these risks.

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Area of Science:

Neurology
Neuroimaging
Vascular Surgery

Background:

Moyamoya disease (MMD) patients experiencing acute ischemic attacks face risks of recurrent cerebrovascular events post-revascularization surgery.
Infarction patterns on diffusion-weighted imaging (DWI) following acute ischemic events in MMD patients are not well understood in relation to post-surgery outcomes.

Purpose of the Study:

To investigate the association between infarction patterns on DWI within 7 days of onset and the risk of recurrent adverse cerebrovascular events (ACEs) in MMD patients after bypass surgery.

Main Methods:

Retrospective review of 327 MMD patients with acute ischemic attacks who underwent revascularization.
Classification of patients into no acute infarction (NAI), single acute infarction (SAI), and multiple acute infarctions (MAIs) based on DWI findings.
Cox proportional hazard models used to assess the risk of recurrent ACEs and strokes.

Main Results:

Over a median follow-up of 41 months, 61 ACEs and 27 strokes occurred.
Compared to NAI, SAI (HR 2.92) and MAIs (HR 4.44) were significantly associated with higher ACE recurrence risk.
Adjusted analyses confirmed these associations, with MAIs showing a persistent increased risk (aHR 4.10).

Conclusions:

DWI-defined infarction patterns in MMD patients predict varying risks of recurrent ACEs after bypass surgery.
Multiple acute infarctions (MAIs) represent a significant risk factor for recurrent ACEs, necessitating heightened preventive strategies.