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Internal carotid artery redundancy is significantly associated with dissection

P J Barbour1, J E Castaldo, A D Rae-Grant

  • 1Department of Medicine, Lehigh Valley Hospital, Allentown, Pa.

Stroke
|June 1, 1994
PubMed

Insights

Internal carotid artery redundancy is linked to spontaneous dissection, especially when bilateral. This finding highlights a potential risk factor for stroke and dissection, particularly in surgical contexts.

Area of Science:

  • Vascular Neurology
  • Cerebrovascular Disease
  • Anatomical Variations

Background:

  • Redundant internal carotid arteries (ICAs) are implicated in surgical risks and stroke.
  • A clear link between ICA redundancy and spontaneous dissection was not previously established.

Purpose of the Study:

  • To investigate the association between internal carotid artery redundancy and spontaneous carotid artery dissection.
  • To determine if ICA redundancy is a risk factor for stroke and dissection.

Main Methods:

  • Retrospective review of stroke/TIA patients (1986-1992) for spontaneous carotid artery dissection.
  • Analysis of 108 percutaneous cerebral arteriograms for ICA redundancies.

Main Results:

  • 62% of patients with spontaneous dissection had redundant ICAs.
  • Significantly higher prevalence of bilateral ICA redundancy in dissection patients (P = .0019).
  • Redundant ICAs were found in 19% of patients without dissection.

Conclusions:

  • A significant correlation exists between ICA redundancy and spontaneous dissection.
  • Bilateral ICA redundancy is a particularly strong indicator of dissection risk.
Abstract

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