Abdominal aortic aneurysm in the interval 5.0-5.5 cm, art or evidence?

• The risk of rupture for aneurysms 5–5.5 cm in diameter has not been specifically studied. Two large randomised trials, the United Kingdom Small Aneurysm Trial and the Aneurysm Detection And Management study Trial concluded that immediate surgical repair did not offer any benefit compared to surveillance and surgical repair if the aneurysm reached 5.5 cm or became symptomatic. Despite these findings many indications today suggest that a lower threshold should be used in patients with higher risk for rupture e.g. women or low risk of mortality in connection with AAA repair such as patients in the lower range of ages.

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