AHA/ACC guidelines |
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Class I |
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(1) Aortic diameter >5.0 cm |
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(Level of evidence: B) |
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(2) Aneurysm growth rate >0.5 cm/year |
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(Level of evidence: B) |
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(3) Aortic diameter >4.5 cm with concomitant indication for elective aortic valve repair/replacement |
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(Level of evidence: B) |
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Aortic size ratios and indexes |
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Aortic diameters >4.5 cm and either of the following: |
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(1) Ratio of aortic area to body height >10 cm2/m in asymptomatic patients with well-functioning BAV, or 8-9 cm2/m in symptomatic patients [91] |
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(2) Ratio of aortic diameter to body surface area >4.5 cm/m2 [92] |
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Other criteria (unvalidated) |
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Aortic diameters >4.5 cm and any of the following: |
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(1) Aortic coarctation, corrected or uncorrected [93] |
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(2) First-degree relative with ascending aortic dissection or rupture |
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(3) Long smoking history, especially with COPD [94, 95] |
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