EndoVascular Aortic Dissection Early vs Delayed

Inclusion criteria

• Acute (2-14 days) high-risk type B aortic dissection.
• Completion of thoracoabdominal aortic CTA before enrollment.
• Ability to understand the study objectives and voluntarily participate, with signed informed consent from the patient or their legal representative.
• Willingness and ability to comply with follow-up visits and study protocols.

Exclusion criteria

• Acute complicated type B aortic dissection.
• Traumatic dissection or penetrating aortic ulcer.
• Connective tissue diseases (e.g., Marfan syndrome, Loeys-Dietz syndrome, Ehlers-Danlos syndrome).
• Pregnancy, women of childbearing potential, or breastfeeding.
• Uncontrolled active infection or active vasculitis.
• Unsuitable access vessels or infection at the access site.
• Endovascular repair requiring ≥2 branch reconstructions.
• Prior aortic surgery (open or endovascular).
• Life expectancy <2 years.
• Myocardial infarction or cerebrovascular accident within 4 weeks before enrollment.
• Severe gastrointestinal bleeding, major surgery, myocardial infarction, or uncorrected coagulation dysfunction within 6 weeks before enrollment.
• Other conditions deemed by the investigator to compromise the patient's medical interests or unlikely adherence to the study protocol.