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Extending Abdominal Aortic Aneurysm Detection to Older Age Groups: Preliminary Results from the Liège Screening Programme.
Annals of Vascular Surgery 2016 October
BACKGROUND: There is evident benefit in terms of reduced aneurysm-related mortality from screening programs of abdominal aortic aneurysm (AAA) in men aged 65 years and more. Recent studies in the United Kingdom and Sweden have shown a decline of the prevalence of AAA in the general population. Current screening policies (e.g., men aged 65-74 years), however, do not account for aging and increased life expectancy of Western populations. This study investigated AAA detection by extending the target population to older age groups (75-85 years).
METHODS: AAA screening was conducted in the County of Chaudfontaine (Liège, Belgium) on the population of elderly (n = 3,054). The participation rate was 36%. The 1,101 participants (722 men aged 65-85 years and 379 women aged 74-85 years) were examined by ultrasound scan. AAA was defined as an infrarenal aortic outer-outer diameter of at least 3 cm. Demographics, clinical parameters, and risk factors were also recorded. AAA prevalence was estimated, and patients with and without AAA were compared by logistic regression.
RESULTS: The overall AAA prevalence was 3.6% (n = 40). In female participants, AAA prevalence was low (1.3%). In men, it amounted 2.7% in the 65-74 age group but rose to 7.3% in the age-extended group (75-85 years). Further in addition to age, height, current smoking, history of coronary artery disease, hypercholesterolemia, peripheral artery disease of the lower limbs, and varicose veins were significantly associated with the presence of AAA.
CONCLUSIONS: These preliminary findings, based on a representative sample of the elderly population of the Liège region, support the idea that current AAA screening policies should be updated to cover an increasingly aging population. The presence of varicose veins as a potential risk factor for AAA should also be considered during screening.
METHODS: AAA screening was conducted in the County of Chaudfontaine (Liège, Belgium) on the population of elderly (n = 3,054). The participation rate was 36%. The 1,101 participants (722 men aged 65-85 years and 379 women aged 74-85 years) were examined by ultrasound scan. AAA was defined as an infrarenal aortic outer-outer diameter of at least 3 cm. Demographics, clinical parameters, and risk factors were also recorded. AAA prevalence was estimated, and patients with and without AAA were compared by logistic regression.
RESULTS: The overall AAA prevalence was 3.6% (n = 40). In female participants, AAA prevalence was low (1.3%). In men, it amounted 2.7% in the 65-74 age group but rose to 7.3% in the age-extended group (75-85 years). Further in addition to age, height, current smoking, history of coronary artery disease, hypercholesterolemia, peripheral artery disease of the lower limbs, and varicose veins were significantly associated with the presence of AAA.
CONCLUSIONS: These preliminary findings, based on a representative sample of the elderly population of the Liège region, support the idea that current AAA screening policies should be updated to cover an increasingly aging population. The presence of varicose veins as a potential risk factor for AAA should also be considered during screening.
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