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Aortic dissection in giant-cell arteritis

G Liu1, R Shupak, B K Chiu

  • 1St. Michael's Hospital, Toronto, Ontario, Canada.

Seminars in Arthritis and Rheumatism
|December 1, 1995
PubMed
Summary
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Giant-cell arteritis can lead to catastrophic aortic dissection, even without prior diagnosis. Inadequate treatment of GCA and hypertension are key risk factors for this severe complication.

Area of Science:

  • Vascular Surgery
  • Rheumatology
  • Cardiology

Background:

  • Giant-cell arteritis (GCA) is a systemic vasculitis that can affect large arteries.
  • Aortic dissection is a life-threatening condition involving a tear in the aorta's inner layer.

Observation:

  • A review of 23 cases and one additional case of aortic dissection in GCA patients was conducted.
  • 46% of patients presented with aortic dissection as the initial manifestation of GCA.
  • 80% of patients died within two weeks of dissection; four underwent successful surgical repair.

Findings:

  • Diffuse aortic involvement by giant cells was observed in 89% of cases.
  • Dissecting tears predominantly occurred in the proximal aorta (85% of cases).
  • Patients with prior GCA history were often on low-dose steroids or untreated, with a median ESR of 62 mm/h.

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  • Hypertension was present in 77% of patients, regardless of severity or chronicity.

    • Implications:

    • Inadequate GCA treatment and uncontrolled hypertension are potential triggers for aortic dissection in GCA patients.
    • Early recognition and management of GCA and associated hypertension are crucial for preventing aortic complications.
    • This study highlights the critical need for vigilance regarding aortic pathology in GCA patients, even those with seemingly controlled disease.