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Multicenter Study
. 2013 Dec;72(12):1989-94.
doi: 10.1136/annrheumdis-2012-202408. Epub 2012 Dec 19.

Large-vessel involvement in giant cell arteritis: a population-based cohort study of the incidence-trends and prognosis

Tanaz A Kermani  1 , Kenneth J Warrington, Cynthia S Crowson, Steven R Ytterberg, Gene G Hunder, Sherine E Gabriel, Eric L Matteson
Affiliations
Multicenter Study

Large-vessel involvement in giant cell arteritis: a population-based cohort study of the incidence-trends and prognosis

Tanaz A Kermani et al. Ann Rheum Dis. 2013 Dec.

Abstract

Objectives: To evaluate incidence-trends and timing of large-vessel (LV) manifestations in patients with giant cell arteritis (GCA), and to examine the influence of LV manifestations on survival.

Methods: A population-based incident cohort of patients diagnosed with GCA between 1950 and 2004 was used. LV involvement was defined as large-artery stenosis or aortic aneurysm/dissection that developed in the 1 year before GCA diagnosis or at any time thereafter. Patients were followed up until death or 31 December 2009.

Results: The study included 204 patients, 80% women, mean age at diagnosis of GCA 76.0 years (±8.2 years). Median length of follow-up was 8.8 years. The cumulative incidence of any LV manifestation at 10 years was 24.9% for patients diagnosed with GCA between 1980 and 2004 compared with 8.3% for patients diagnosed with GCA between 1950 and 1979. The incidence of any LV event was high within the first year of GCA diagnosis. The incidence of aortic aneurysm/dissection increased 5 years after GCA diagnosis. Compared with the general population, survival was decreased in patients with an aortic aneurysm/dissection (standardized mortality ratio (SMR) 2.63; 95% CI 1.78 to 3.73) but not in patients with large-artery stenosis (SMR 1.44; 95% CI 0.87 to 2.25). Patients with GCA and aortic manifestations had a higher than expected number of deaths from cardiovascular and pulmonary causes than the general population. Among patients with GCA, aortic manifestations were associated with increased mortality (HR=3.4; 95% CI 2.2 to 5.4).

Conclusions: Vigilance and screening for aortic aneurysms should be considered in all patients 5 years after the incidence of GCA. Aortic aneurysm/dissection is associated with increased mortality in GCA.

Keywords: Cardiovascular Disease; Epidemiology; Giant Cell Arteritis.

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Figures

Figure 1
Figure 1
Incidence rates of large-vessel involvement by disease duration in patients with giant cell arteritis (GCA).
Figure 2
Figure 2
Survival in patients with giant cell arteritis (solid line) who develop large-artery stenosis (LAS) (top panel) logrank p=0.11, or, aortic aneurysm/dissection (AA/AD) (bottom panel) compared to the general population (dotted line), logrank p<0.001.
Figure 2
Figure 2
Survival in patients with giant cell arteritis (solid line) who develop large-artery stenosis (LAS) (top panel) logrank p=0.11, or, aortic aneurysm/dissection (AA/AD) (bottom panel) compared to the general population (dotted line), logrank p<0.001.
See this image and copyright information in PMC

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