What is the approximate diameter threshold for elective repair of an abdominal aortic aneurysm in men?

What is the approximate diameter threshold for elective repair of an abdominal aortic aneurysm in men?

• A. 4.5 cm
• B. 5.0 cm
• C. 6.0 cm
• D. 5.5 cm

Answer: (D)

Rupture risk climbs as the aneurysm enlarges, so the decision for elective repair balances the chance of rupture against the risks of surgery. In men with an asymptomatic abdominal aortic aneurysm, the commonly accepted threshold for repair is about 5.5 cm. At this size the risk of rupture becomes high enough that undergoing repair tends to provide a favorable balance of risk and benefit. If the aneurysm grows rapidly (for example, more than about 0.5 cm per year), is symptomatic, or if other risk factors apply, repair may be considered earlier. In contrast, women often reach repair consideration at a slightly smaller size due to generally smaller aortic dimensions.

Rupture risk climbs as the aneurysm enlarges, so the decision for elective repair balances the chance of rupture against the risks of surgery. In men with an asymptomatic abdominal aortic aneurysm, the commonly accepted threshold for repair is about 5.5 cm. At this size the risk of rupture becomes high enough that undergoing repair tends to provide a favorable balance of risk and benefit. If the aneurysm grows rapidly (for example, more than about 0.5 cm per year), is symptomatic, or if other risk factors apply, repair may be considered earlier. In contrast, women often reach repair consideration at a slightly smaller size due to generally smaller aortic dimensions.