Gestational aortic dissection: Moving beyond diameter in pregnancy-specific aortic risk assessment

Gestational aortic dissection is uncommon, but a missed diagnosis can be fatal. Xu and colleagues examine 43 women with gestational aortic dissection using clinical data and CTA-derived aortic morphology, benchmarked against two deliberately different control groups: 100 women delivered by cesarean and 22 age-matched women with normal aortic CT angiography. Their data are straightforward. Chest or back pain was the usual presentation, type A dissection clustered in the third trimester, and hypertension, Marfan syndrome, and hypoproteinemia were frequent. Women with dissection had larger aortic diameters across every measured segment and, more notably, a shorter aortic arch than imaging controls. Diameter still matters, but it does not carry the whole risk assessment. Pregnancy-related aortic risk should be read as a clinical-morphological phenotype that combines segmental enlargement, root phenotype, arch configuration, growth trajectory, blood pressure, inherited risk, and obstetric exposure. The design matters as much as the findings, and it defines the next task: prospective, multicenter, genotyped, pregnancy-specific evidence.