Thresholds for elective surgical intervention prior to pregnancy and indication for caesarean section [35]
| Disease | Indication prepregnant surgery | Indication caesarean section |
|---|---|---|
| Marfan syndrome | ≥ 45 mm | ≥ 45 mm |
| Turner syndrome | ≥ 27 mm/m2 | ≥ 27 mm/m2 |
| Bicuspid aortic valve | ≥ 50 mm | ≥ 45 mm |
| Loeys-Dietz syndrome | ≥ 45 mm | ≥ 45 mm |
| Vascular Ehlers-Danlos Syndrome | Contraindicated | Always |
| Others | ≥ 50 mm | ≥ 45 mm |