Growth rates of subclinical abdominal aortic aneurysms—implications for review and rescreening programmes

Recommendations for screening intervals for small aortic aneurysms

“…In the present study an AAA was defined as an aortic diameter larger than 2·5 cm, in keeping with previous publications 3,8,10,11,13 . However, others have argued that an aortic diameter smaller than 3·0 cm is normal, and unlikely to progress to clinically significant AAA formation 12,14 .…”

“…However, using data from a larger series with longer follow-up, they later concluded that AAAs smaller than 4·0 cm diameter could reasonably be rescreened after 5 years as more frequent imaging was unlikely to detect many clinically significant aneurysms 7,8 . Vardulaki et al 9 analysed longitudinal data from the Huntingdon and Chichester screening programmes, and calculated growth rates of AAAs and the risk of rupture over time.…”

Potential benefits and harms of offering ultrasound surveillance to men aged 65 years and older with a subaneurysmal (2.5-2.9 cm) infrarenal aorta

“…These studies provide data for KQ3a [20][21][22] and KQ3b, 20,21 and ROB was assessed for these outcomes. The study of Watson et al 23 is an update to the study of Collin et al 24 ; the study of Collin et al provided data on growth rates. KQ1.…”

Abdominal Aortic Aneurysm : Aspects on how to affect mortality from rupture

“…The prevalence of sub---aneurysmal aortas (25---29 mm) was 4.2%. The proportion of AAA annually growing into the next size group was similar for the three AAA sizes smaller than 55 mm, Table 1 (Wild et al 2013, Collin, Heather & Walton 1991, UKSAT Participants 1998, Lederle et al 2002b) The estimated annual risk of rupture was low for AAAs smaller than 55 mm. For AAA ≥ 55 recent data suggested an annual risk of approximately 25% (Noronen et al 2013).…”