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. 2019 May;112(5):649–705. doi: 10.5935/abc.20190086

Table 7.

Threshold diameters for indicating aortic aneurysm surgery, according to current guidelines

Aorta Marfan/BAV Non-marfan
Ascending 5.0 cm 5.5 cm
Descending 6.0 cm 6.5 cm

BAV: bicuspid aortic valve.