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High incidence of arterial dissection associated with left vertebral artery of aortic origin

M Komiyama1, T Morikawa, H Nakajima

  • 1Department of Neurosurgery, Osaka City General Hospital, Osaka.

Neurologia Medico-Chirurgica
|February 24, 2001
PubMed

Insights

Vertebral artery (VA) dissection is more common when the VA originates from the aorta. This study found left VA of aortic origin has a higher dissection incidence than VA of subclavian origin.

Area of Science:

  • Vascular Surgery
  • Anatomy
  • Radiology

Background:

  • The vertebral artery (VA) is a major blood vessel supplying the brain.
  • Understanding VA anatomical variations is crucial for diagnosing and treating vascular diseases.
  • Arterial dissection of the VA can lead to serious neurological complications.

Observation:

  • Angiography confirmed VA origins in 860 left and 717 right patients.
  • Left VA of aortic origin was identified in 21 patients; no right VA of aortic origin was found.
  • Left VA of left subclavian artery origin and right VA of right subclavian artery origin were common.

Findings:

  • Arterial dissection occurred in 17 patients.
  • Left VA of aortic origin showed a significantly higher incidence of dissection (p < 0.001).
  • Left VA of aortic origin demonstrated a predilection for dissection compared to VA of subclavian origin.

Implications:

  • VA origin from the aorta is a risk factor for dissection.
  • This finding aids in risk stratification and diagnostic imaging protocols.
  • Further research into the mechanisms of VA dissection is warranted.

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