Key result
A normal abdominal ultrasound at age 65 excluded over 90% of men from future risk of significant aneurysmal dilatation at 5 years, with only 1.1% developing an aortic diameter ≥3 cm.
Why the study?
Does a single normal ultrasonographic scan at age 65 exclude the future risk of significant aneurysmal dilatation of the aorta in men?
Population
223 men with a normal abdominal aortic diameter at age 65 or 66 years when first examined by ultrasonography
Design
Cohort
Follow-up
5 years
Authors
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May support one-time AAA screening at 65 in men; leaves open randomized confirmation before guideline changes.
Cohort (n=223)
Does a single normal ultrasonographic scan at age 65 exclude the future risk of significant aneurysmal dilatation of the aorta in men?
A single normal ultrasonographic scan at age 65 is sufficient to exclude over 90% of men from future risk of significant abdominal aortic aneurysm, suggesting repeat screening is unnecessary.
Emerton et al. (1994) conducted a cohort in Abdominal aortic aneurysm (n=223). Normal abdominal aortic diameter (<2.6 cm) at age 65-66 was evaluated on Aortic diameter of 3 cm or more on rescanning. A normal abdominal ultrasound at age 65 excluded over 90% of men from future risk of significant aneurysmal dilatation at 5 years, with only 1.1% developing an aortic diameter ≥3 cm.
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