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Related Experiment Videos

Screening for abdominal aortic aneurysm: a single scan is enough

M E Emerton1, E Shaw, K Poskitt

  • 1Department of Surgery, Gloucestershire Royal Hospital, Gloucester, UK.

The British Journal of Surgery
|August 1, 1994
PubMed
Summary
This summary is machine-generated.

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A single ultrasound at age 65 can safely identify men unlikely to develop abdominal aortic aneurysms. This finding supports cost-effective population screening programs by excluding most individuals from further surveillance.

Area of Science:

  • Vascular Surgery
  • Diagnostic Imaging
  • Preventive Medicine

Background:

  • Abdominal aortic aneurysm (AAA) screening aims to detect potentially life-threatening aortic dilatation.
  • Ultrasonography is a primary tool for AAA screening, but optimal screening protocols require validation.
  • Longitudinal data on aortic diameter changes in men with initially normal measurements are crucial for refining screening strategies.

Purpose of the Study:

  • To assess the stability of normal abdominal aortic diameter over a 5-year period in men aged 65-66.
  • To evaluate the efficacy of a single ultrasonographic examination in predicting long-term risk of significant aortic dilatation.

Main Methods:

  • A cohort of 223 men aged 65-66 with normal abdominal aortic diameter (<2.6 cm) underwent repeat ultrasonography 5 years later.

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  • Aortic diameters were compared between the initial examination and the follow-up scan.
  • Outcomes included changes in aortic diameter and incidence of new aortic dilatation (≥3 cm).

    • Main Results:

    • Mean aortic diameter remained stable over the 5-year follow-up period.
    • 166 out of 189 (87.8%) survivors had repeat measurements within 3 mm of their original value.
    • Only two patients developed an aortic diameter of 3 cm or more on rescanning, indicating a low incidence of significant dilatation.

    Conclusions:

    • A single ultrasonographic screening for abdominal aortic aneurysm at age 65-66 is effective in excluding over 90% of men from the risk of significant aortic dilatation.
    • This approach offers significant cost and organizational benefits for population-based screening programs.
    • Routine follow-up ultrasonography may not be necessary for men with normal initial aortic measurements at this age.