High prevalence of abdominal aortic aneurysm in a primary care screening programme

Background The mortality rate associated with ruptured abdominal aortic aneurysm (AAA) remains high. The objective of this study was to assess the feasibility of population screening for AAA. Methods In an area with a mixed rural and industrialized population of 60 000 inhabitants, all 23 general practitioners (GPs) participated. The GPs selected from their patient lists men aged 60-80 years. Men whose condition was suitable for aortic surgery were invited for screening by a single postal letter. All men responding had aortic ultrasonography in or close to the GP surgery. Diagnosis of AAA was established when the aortic diameter was 30 mm or greater. Referral for surgery was advised for an aortic diameter of 50 mm or greater. Results Of 2914 invitations, 2419 men had ultrasonography, resulting in an attendance rate of 83.0 per cent. A total of 2416 aortic measurements were made; 196 aortic aneurysms were diagnosed (prevalence 8.1 per cent). In 40 men the aortic diameter was over 50 mm. Conclusion Ultrasonographic screening for AAA is feasible in a primary care setting.