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Related Experiment Videos

Is angiographic spasm real spasm?

M Mizukami, H Kin, G Araki

    Acta Neurochirurgica
    |January 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

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    This study details the three stages of cerebral artery narrowing after aneurysm rupture, revealing distinct cellular changes from muscle contraction to tissue necrosis, crucial for understanding vasospasm.

    Area of Science:

    • Neurology
    • Pathology
    • Vascular Biology

    Background:

    • Subarachnoid hemorrhage from ruptured aneurysms frequently leads to cerebral vasospasm.
    • Understanding the morphological changes in cerebral arteries during vasospasm is critical for effective treatment.

    Observation:

    • Morphological study of cerebral arteries in six autopsy cases with ruptured aneurysms.
    • Repeated angiograms tracked arterial luminal narrowing over time.
    • Histological examination correlated angiographic findings with arterial wall changes.

    Findings:

    • Acute stage (<1 day): Medial smooth muscle cell contraction is the primary cause of narrowing.
    • Subacute stage: Luminal reduction involves medial thickening, internal elastic lamina corrugation, and thrombus formation.

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  • Chronic stage (>2 weeks): Necrosis of smooth muscle cells and intimal thickening contribute to persistent narrowing or dilatation.

    • Implications:

    • Histological changes provide a basis for interpreting angiographic vasospasm.
    • Recognizing these structural alterations is vital for accurate diagnosis and therapeutic strategies.
    • This research enhances the understanding of vasospasm pathophysiology and clinical management.