American Journal of Epidemiology Advance Access first published online on December 9, 2008
This version published online on January 19, 2009
American Journal of Epidemiology, doi:10.1093/aje/kwn346
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Original Contribution |
Relation of Common Carotid Artery Lumen Diameter to General Arterial Dilating Diathesis and Abdominal Aortic Aneurysms
The Tromsø Study
Correspondence to Dr. Stein Harald Johnsen, Department of Neurology, University Hospital of North Norway, N-9038 Tromsø, Norway (e-mail: stein.harald.johnsen{at}unn.no).
Received for publication May 27, 2008. Accepted for publication October 3, 2008.
In a cross-sectional, population-based study in Tromsø, Norway, the authors investigated correlations between lumen diameter in the right common carotid artery (CCA) and the diameters of the femoral artery and abdominal aorta and whether CCA lumen diameter was a risk factor for abdominal aortic aneurysm (AAA). Ultrasonography was performed in 6,400 men and women aged 25–84 years during 1994–1995. An AAA was considered present if the aortic diameter at the level of renal arteries was greater than or equal to 35 mm, the infrarenal aortic diameter was greater than or equal to 5 mm larger than the diameter of the level of renal arteries, or a localized dilation of the aorta was present. CCA lumen diameter was positively correlated with abdominal aortic diameter (r = 0.3, P < 0.01) and femoral artery diameter (r = 0.2, P < 0.01). In a multivariable adjusted model, CCA lumen diameter was a significant predictor of AAA in both men and women (for the fifth quintile vs. the third, odds ratios were 1.9 (95% confidence interval: 1.2, 2.9) and 4.1 (95% confidence interval: 1.5, 10.8), respectively). Thus, CCA lumen diameter was positively correlated with femoral and abdominal aortic artery diameter and was an independent risk factor for AAA.
aorta, abdominal; aneurysm; blood vessels; carotid arteries; ultrasonography
Abbreviations: AAA, abdominal aortic aneurysm; CCA, common carotid artery; CI, confidence interval
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