Timing of Type B AD

Q: Hyperacute phase of acute type B aortic dissection is? (select one)

A) <12 hours

B) <24 hours

Answer: B

 

Conventionally Type B aortic dissection is classified as acute (less than 14 days) or chronic (more than14 days). Recently, the Society for Vascular Surgery (SVS) and Society of Thoracic Surgeons (STS) has updated the reporting standards for type B aortic dissections from the onset of symptoms:

• Hyperacute: <24 hours
• Acute: 1 to 14 days
• Subacute: 15 to 90 days
• Chronic: >90 days

#vascular

#cardio-thoracic

Reference:

Lombardi JV, Hughes GC, Appoo JJ, et al. Society for Vascular Surgery (SVS) and Society of Thoracic Surgeons (STS) reporting standards for type B aortic dissections. J Vasc Surg 2020; 71:723.